Multiline Comment field lacks drop-down arrow

This might not qualify as a bug, but this seems to be the best place for it…

I have now enabled the Comment field in the Tag Panel to be multiline. Problem is, now there is no longer a drop-down arrow that I can click on to view or select from multiple Comment values when multiple files with different Comment values are selected. Unless I’m missing something, or simply have to choose between having the multiline feature or the drop-down arrow. Please advise.

You've guessed correctly: it's not possible for a multiline field to have a drop-down.