To Reproduce
Using pet action id show and hovering over a special action ability spell in a summons spellbook causes a lua error.

TipTac-v23.03.07-release

Unfortunately I can't reproduce this. I think another addon is responsible for this. Can you disable your other addons one by one and find out the corresponding addon?

It happens even if I turn off all addons and only turn on TipTac and BugSack.
Activate "Show Pet Action ID" and only occurs on special ability spells.

I has been able to reproduce it. I haven't enabled "Show Pet Action ID"... 🙈

I fixed it. Will be included in the next release. 👍

You are amazing. Thank you always!