Error: 'using disposed tabster'.

[Vishal Putta]

We are using tabster version - 4.1.1

We are seeing many 'using disposed tabster' errors in our product logs.
Callstack -

I looked at the code and this could be causing issue.
https://github.com/microsoft/tabster/blame/c1b46b478fd0d75fe95b5653d525658e2bf16d6a/src/Modalizer.ts#:~:text=this._hiddenUpdateTimer%20%3D,%2C%20250)%3B

There is a possibility that this code could be executed after tabster is disposed, which would cause this error.

    this._hiddenUpdateTimer = this._win().setTimeout(() => {
        delete this._hiddenUpdateTimer;
        this._hiddenUpdate();
    }, 250);

@mshoho

[かがみ]

We got some such errors in jest testing environment with react testing framework after upgrading to latest Fluent UI v9, tests become flaky

@mshoho please let me know if there's something I can help, really want to get this issue resolved

[Marat Abdullin]

The fix for that is already in master. I can release canary for you to test right now. I need to fix one more bug before releasing new version. Hopefully it'll be ready by the end of today (or first part of tomorrow).

[かがみ]

Thanks, that saved my day.

I grabbed a build of current main branch and can confirm that the issue is gone. Looking forward to having it via FluentUI v9 updates