Hello, after upgrading to version 2.89a a few weeks ago tags will not be written from the 'Tag panel' (Dutch 'Invoervelden') any more.
This goes as well for editing a single file as for editing multiple files. After saving nothing is saved!
In the file window (the right pane with the columns, I don't know the Dutch name) I can write tags as usual in the fields per field and per file.
After deinstalling MP3tag (fully including the configuration-files) rebooting my PC and reinstalling MP3tag (and rebooting my PC again) The editing in the 'Tag panel' for single and multiple files works as expected until I close MP3tag and the next time I run it it doesn't work any more.
I'm switching back to the previous version of MP3tag v2.89. Although a bit buggy (with the 'Duplicate standard fields' elsewhere on the forum reported) it does at least write multiple tags from the 'Tag panel'
PS. in old versions - long before this one - the Save-button greyed out after saving or no changes made. I happen to find that a handy feature.