Now I’m REALLY confused. As far as I can tell, descriptions have never been truncated for me. I made a point of stating, in my own post to “The case of the the missing COMMENT”, that I routinely write the same string, long or not, to DESCRIPTION, SUBJECT, TITLE and COMMENT, and I’ve never noticed any of those getting truncated — just the COMMENT disappearing from DOpus’ view when it is 513+ characters, though the actual metadata is unchanged. Please take a look at the description for “1 DOpus\2020-12-15 23;59;59 - General - xFGHI-00001 Invoice 1234567890 - 07 (513 ch).png” in the 7-zip I attached to my post there. Does it not exhibit a 513-character string for you?
I just injected your 825-character into a dummy PNG with no metadata, and it did not get truncated for me. If you want to zip and upload an image you’ve gotten the truncation with, I’ll take it for a spin here.