I am still investigating it.
It started with Delphi 10.3 version. 
I use shared highlighters, it means all files of same type, e.g. PHP uses one
shared hihglighter object. 
I will rewrite it and create for each file individual highlighter. 
It will be lot of work - color handlings, multihighlighter is several
highlighters joined into one. 
So please be patient, I don't give it up.

PSPad freeware editor https://www.pspad.com

Odpovedet emailem