Better error handling for IE11 users accessing large dashboards

[tbragin]

Today, when IE 11 users access large dashboards, they hit the following error message: #4919

We understand the root cause, but the fix is not easy and may take a while to arrive at: #3947

Known workarounds are:

• Do not use IE11 to load or modify large dashboards
• Break up bigger dashboards into multiple smaller dashboards
• Allow users to access big dashboards using shortened URLs (but if they go to modify them, they’ll still hit this problem)

This ticket calls for handling this error explicitly and showing a user an error message directing them to use another browser (instead of crashing) until resolution below is implemented.

[w33ble]

FYI, the error isn't limited to modifications, as simply loading the dashboard ofter triggers a "modification" as gridster updates the layout for your screen. This is why users can and do see the error immediately upon loading dashboards.

[tbragin]

Thanks, @w33ble, I updated the workarounds above

[tbragin]

Btw, relabeling to "bug", since as discussed with @rashidkpc not handling a stack trace and showing it directly to a user should be considered a bug.

[simianhacker]

This bug needs to be fixed in the next patch release for 4.5.1

[georgewfisher]

I'm seeing the same error on Edge 13.1 (it isn't restricted to IE11). This is odd given that Edge is supposed to support longer URLs.

[georgewfisher]

correction: Edge appears not to support longer URLs after all.