Gitk lower panel cannot resize

Question

In gitk there are two panel, the top panel which display mostly the list of commits, and the bottom panel which shows changes in this commit. Somehow, since this week I cannot adjust the height of these two panels, like making one of them bigger/smaller. Any idea why?

Answer 1

Maybe you don't see thin resize widget? It's between searchbars:

Try to change "Edit - Preferences - Use themed widgets" option and restart gitk.

Answer 2

Just in case this was not a technical but a user issue, note that the resize line to grab is not where it should be. It's not the window line that's above "SHA1 ID:" but above the "Search" button and below the "next" and "prev" buttons. It's extremely unintuitive.