I can confirm this issue for the German version of TB 78.1.1. The missing translations seem to only affect the Edit menu, right click menu and the attachment pane of the mail compose window.

Do you also see this after you do Help > Restart with addons disabled?

p.s. it looks like you are using https://addons.thunderbird.net/en-US/thunderbird/addon/thunderhtmledit/

it's no help, I restarted with add-ons turned off without changes, uninstalled all add-ons like html code editor also doesn't help, still translations are not correct, it's rather something in the program itself some error

see https://bugzilla.mozilla.org/show_bug.cgi?id=1659248

This is now fixed in the German version with the latest 78.2.2 release.

and when will the Polish version be corrected? it's still broken