Need help troubleshooting Fc Web App issues

Apps
1

I’m having repeated issues with my Fc Web App, including slow loading, random errors, and features not working as expected across different browsers. I’ve checked my internet connection and cleared cache, but the problems persist. Can someone explain what might be causing this and suggest specific steps to diagnose and fix these Fc Web App performance and functionality problems?

2

I’d treat this like a real bug hunt, not a “my internet is slow” thing, since you already checked that.

Here is a simple checklist that usually narrows this down fast:

  1. Confirm what is broken
    • Note exact URLs or views where it happens.
    • Take screenshots of errors.
    • Open DevTools in your browser (F12).
    • On the Console tab, look for red errors. Copy the main message and the file name / line number.
    • On the Network tab, reload, sort by Status, and look for 4xx or 5xx responses.

  2. Try a clean browser profile
    • Use Chrome’s Guest profile or a fresh profile.
    • Disable all extensions.
    • If it works there, you likely have an extension or profile issue.
    • If it fails the same way, it points to the app or your account.

  3. Cross browser test in a structured way
    • Test in Chrome, Firefox, Edge.
    • Note version of each browser.
    • Note OS and version.
    • Try incognito/private mode.
    This info helps support or devs reproduce the bug.

  4. Check for account related issues
    Some web apps misbehave for specific accounts or roles.
    • Log out, then access any public or login page again.
    • If the page loads fine while logged out, but breaks when logged in, the issue might be tied to your account data or permissions.
    • If possible, test with a different user account.

  5. Measure “slow loading” a bit
    • In DevTools Network tab, check “DOMContentLoaded” and “Load” timings.
    • Look for a single request that takes much longer than the others.
    • If some API calls take 5 to 20 seconds, grab their URL and response status.
    That gives the dev team a clear target.

  6. Clear data more deeply
    You said you cleared cache, but try this:
    • In DevTools, Application tab.
    • Clear Storage for the site (cookies, localStorage, sessionStorage).
    • Then reload with Ctrl+F5.
    If the app uses heavy localStorage data, corrupt data sometimes causes weird behavior.

  7. Check for known issues or version changes
    • If Fc Web App has a status page, check it.
    • If there is a changelog or “What’s new” section, see if issues started right after a new release.
    • If you remember roughly when the problems started, note that date.

  8. Collect data before contacting support or devs
    When you open a ticket or post on their official forum, include:
    • Browser name and exact version.
    • OS and version.
    • Steps to reproduce, step by step.
    • Expected result vs actual result.
    • Screenshots of console errors and failing network calls.
    • Times of day when it happens, with timezone.
    This reduces the back and forth.

  9. Quick tests you can try yourself
    • Try on a different machine on the same network.
    • Try on mobile browser with WiFi off, using mobile data.
    If it works fine on mobile data but not on your normal network, there might be DNS, proxy, VPN, or firewall interference.
    Try changing DNS to 1.1.1.1 or 8.8.8.8 on your computer as a test.

  10. If random features fail
    • Watch DevTools Console when you click a broken feature.
    • If you see something like “CORS” error, “NetworkError”, or “undefined is not a function”, paste that into your bug report.
    • If only certain buttons or sections fail, note exactly which ones.

If you post the exact console error text and one or two failing request URLs (scrub any private tokens), people here can point to more specific causes. Right now it smells like either a frontend JS bug in the app or a backend endpoint that times out or throws 500s.

3

Sounds like you’re hitting a mix of frontend and backend weirdness, not just “clear cache and pray” territory.

I mostly agree with @viajantedoceu’s bug‑hunt checklist, but I’d actually zoom out a bit and check some stuff they didn’t emphasize:

  1. Is it really “random”?
    Try to spot a pattern:

    • Same time of day when it’s slow? Could be server load or rate limiting.
    • Same actions (e.g., opening a specific dashboard, exporting, uploading)?
    • Same data size (huge lists, big files, big reports)?
      “Random” is often “I haven’t noticed the pattern yet.”

  2. Feature flags / environment mixups
    If Fc Web App has multiple environments (prod / staging / beta):

    • Make sure the URL is the intended one.
    • Sometimes a beta flag or A/B test bucket breaks stuff only for a subset of users.
      If you ever clicked something like “Try the new experience” that might be the culprit. Try to find a “switch back to classic” option if there is one.

  3. Check for throttling or rate limits
    Repeated actions in a short time can trigger API rate limits:

    • When things break, check the Network tab for 429 responses or suspicious 403s.
    • If you see 429 too many requests, you’re being throttled, which can feel like random failures.

  4. Local network quirks, not just “internet is fine”
    Your connection being “fast” in speed tests doesn’t mean it plays nicely with this app:

    • Corporate VPN / proxy / firewall can block or rewrite requests, especially websockets and long‑polling.
    • If you’re on a work machine, try from a personal laptop on the same WiFi, then try with VPN off.
      If it works fine off VPN, you probably need IT to whitelist some domains or ports.

  5. Time / clock issues
    Weird one, but I’ve seen it:

    • If your system clock is off by a lot, auth tokens can fail, causing logouts, 401s, or “random” errors.
      Just quickly check your OS time and timezone are correct and auto‑sync is on.

  6. Third‑party blockers beyond browser extensions
    You already cleared cache, but:

    • Check if you’re running any antivirus / endpoint security that injects into HTTPS traffic.
    • Some “web protection” modules block tracking or analytics scripts that the app actually relies on.
      You can test by temporarily disabling just the web protection module (if allowed) and seeing if behavior changes.

  7. Data corruption on the server side
    @viajantedoceu mentioned account‑level issues, but to push this further:

    • If a specific view with your data always explodes, but the same view for a clean / new account works, the backend might be choking on a bad record tied to you.
    • Example: a null value where they didn’t expect it, or a record with a broken relationship.
      That’s on their devs, but you can help by giving them:
    • The exact entity ID or project/client/whatever that fails.
    • A note like: “This page only fails for [specific item].”

  8. Reproduction script for yourself
    Write a short “script” and run it a couple times:

    1. Open browser in private mode.
    2. Log in.
    3. Click: X → Y → Z.
    4. Note precisely where it slows / breaks.
      If it fails 3/3 times with that script, gold. If it fails 1/3, note that too. Intermittent bugs are still bugs, but devs need the probability, not just “sometimes.”

  9. Watch memory usage while it’s slow
    In Chrome:

    • Open Task Manager (Shift+Esc).
    • See if the Fc Web App tab is eating absurd RAM or CPU when things slow down.
    • If memory usage skyrockets over time, it might be a memory leak. Try:
      • Load app, leave it alone 10–15 minutes, then try the same feature again.
        If it gets worse the longer it is open, you’ve likely hit a leak.

  10. When you report this, send a single, tight bundle
    Instead of multiple vague tickets, send one focused bundle:

  • 2–3 concrete “Scenarios” with steps.
  • For each: browser, OS, approximate time, what you clicked, what happened, one or two console errors, and any failed request URL (sanitized).
  • Mention that different browsers all show issues, and note whether behavior is identical or slightly different in each.

If you can grab one example of:

  • A slow action with its longest Network request, and
  • A broken feature with its exact console message,

and post those, folks can usually point to “frontend bug,” “auth issue,” or “network / proxy problem” pretty fast. Right now my money’s on a combination of account‑specific server issues + something in your environment making the app more fragile.