I experience a problem regarding entering a formula using Math formula editor. Probably since version 7.2 I am unable to enter the ^ character for exponentiation into the math edit area (same for the accute character ` for adding space). After hitting that key and the space key only an “space” character is displayed.
Outside the edit area (in writer itself) this is not a problem at all. At the moment I can help myself by copying and pasting these characters into the edit area of math (either standalone document or inserted via Insert → Object).
This was working with version 7.1 (confirmed via a snap package with version 7.1)
Operating System: Ubuntu 20.04
Installation method: flatpak