Unicode code points > U+ffff handled incorrectly
A user send me an mkv with Tags. When I load this mkv to MTX Info tool it shows me the correct value for the TagString. After a simple remux to a new mkv, without changing anything, the value for the TagString is different/damaged.
I attach a zip with the mkv named 1.mkv and the original named mkv, which can't open in MTX(unsuported file format, but after renaming it works). TagString_issue.7z