I have the following problem when writing notes which contain characters such as German umlauts or Czech “ť” - characters which require to by typed through a combination of pressing different keys. In the notes pane, it results into two characters (“ˇt” instead of “ť”, “¨o” instead of “ö”, etc.). It works fine in the metadata pane though.
I use version 1.12.0 (x64) on Linux Mint 21.1.
I’m not sure if this is the same problem as described here: Issue with accented characters
EDIT: On more search, it might be identical with this problem: Unable to type notes in Japanese or Chinese - I understand this should be fixed in the upcoming release.