I use lua function nodes.toutf to print text being typeset in log output for debugging purposes etc… and I noticed output is now different for some characters/glyphs.
I use EB Garamond font, which might explain.
Before, for example output was :
user > margin > margin box text Thareh.
Now it is :
user > margin > margin box text areh.
The « Th » was replaced by some placeholder perhaps for unknown character?
Please note that typeset text is not impacted, it seems correct.