I'm using a Mac using iTerm2, OhMyZsh, and the Powerlevel10k theme. I've installed the recommended fonts directly from the Powerlevel10k docs, updated the settings for fonts in Terminal, iTerm2, and VS Code according to the docs, and it mostly works, except that there is always some unexpected character at the end of the prompt (usually !1 or !2). I've found nothing in the docs, searches of forums, or internet searches that helps with this so far.
Any hints that could help me resolve this, even just the right search term to help me find answers would be much appreciated.