Tabs adding problem

Bug description

When adding a new Tab in Waiter tasks and immediately making an order on any tab, Firefox will prompt users with following box:
To display this page, Firefox must send information that will repeat any action (such as a search or order confirmation) that was performed earlier.

Expected behaviour

No more tabs with the same name

Steps to reproduce

1. Create new Tab
2. Make order on any tab (don't leave the page)
3. Click resend

Possible fixes

Dump the cache? Discovered on Firefox Broswer 79.0 (64-bit), may appear on other browsers as well.