GUI checkboxes are wrong making it hard to select a fill tag.
Go into Easytag. Select some files. Click the "CDDB Search" button. Search using selected files.
Select a result and some tracks.
No "Fill Tags" checkboxes are selected and "Apply" is greyed out. So far, this is expected.
Click any of the checkboxes. "Apply" is still greyed out, even though it should be active. Unclick that checkbox. "Apply" is now active, even though there are no checkboxes. Click the checkbox and "Apply" is inactive again. This makes it difficult to apply to a single fill tag.
The workaround is to click on a checkbox (causing Apply to become greyed), then click a second checkbox (which makes it active), then unclick the second checkbox (Apply remains active).
Easytag version is 2.4.3, 64 bit on Mageia Linux 8.0.