Compile bug with bold and subscript?

Dear Keith and Ioa.

I think the user on the the thread linked below might have identified a bug when mixing bold and subscript:

https://forum.literatureandlatte.com/t/this-page-contains-the-following-errors-error-when-trying-to-compile-to-epub/44493/1

Deatails and samples in the thread.

Slàinte mhòr.

FYI, this still doesn’t work in 3.1.2, as far as I can tell in testing.

Slàinte mhòr.

This has been fixed for the next update.
Thanks,
Keith