Typing issues with terminal emulators: Unexpected cursor jumps and replacements

I tried a few different terminal emulators on my Ubuntu 24.10. Specifically, Kitty, Ghostty and zellij. All three suddenly presented strange strange behavior: while I type, the cursor jumps a few spaces ahead (just as though I had pressed the TAB key), or it replaces what was typed with the newly typed character but without moving the cursor. For example, when trying to type cd Media, I get something like this instead:

$ cd Med a

Does anyone know how I can fix this?