Diễn đàn hỗ trợ Firefox

when i open my firefox, all of my previous opened tabs goes blank and only 1 rightmost recent tab can be open, that was my last night tab,next i close firefox and open again and my tabs its all gone

Steps that remove my pinned tabs from Firefox:

Open pinned web app from taskbar. Open regular Firefox browser.

Any pinned tabs that were in the browser before opening the web app are lost.

Is this already reported? I can't imagine this is intended behavior.