This bug is a few versions old, and I decided to finally make a report
Hard to explain, and not ALWAYS reproduceable.
- Drag a bunch of files from the explorer into MP3tag, where they are sorted by path.
- Enter the "Year"-Field of the last entry in the list by klicking on it, and the actual year gets selected
- Press delete and the complete line disappears (works only with the bottom line
When you repeat step 1, you see that the year was deleted from the ID3tag.