WorkMail signatures - can't upload image

Hello, is uploading images to signatures broken currently?

When i press image button in signature it grays out the whole screen and it is impossible to do anything afterwards.

There is an error in the console when the button is pressed - I attached a screenshot.

Page refresh, clearing cache - doesn't help.

I am using Chrome latest version, os is Linux Mint 21, which is based on Ubuntu 22.04.

Thanks!