If you write a long text in Russian into the "comment" tag, then a single dot will be visible instead of it on the Selection Properties panel. However, a short text in Russian will be visible. If you open Properties in the context menu of a file, the entire comment will be visible in it. Long text in English will also not be visible in the Selection Properties panel, but its length before disappearing may be longer than that of text in Russian.
I wrote the tags through Foobar2000, clicked Properties in the context menu of the file and wrote down the comment tag.
Check the LargeFieldsConfig.txt on the foobar folder.
Thank you. By increasing the first three values to 999999, comments began to show without problems, no matter how long they were.