I think JohnMD is referring to the Projects List - at least that screen does what he describes, but I suspect anywhere with columns might show the problem.
If on a narrowish screen you have a right left scroll bar and you use it you will see the column heads go out of sync until you scroll up/down, when it makes an attempt to rectify it.
A similar effect is caused when you use a screen wide enough to automatically show the left hand menu. If you hit the Burger button to hide this menu on the left it disappears correctly, and the data above and below the column headers slide into the left hand side nicely but the column headers remain as they were.
One final, and to me most irritating thing about this screen (which is otherwise brilliant!), is that when you click the Burger button to hide the left hand menu and then Refresh the screen it forgets you have hidden it and it comes back. This is not entirely consistent though as there have been times when I have been really pleased to see this has been fixed, but then when i look at a different screen or something it comes back. I have tried for ages to try to find the trigger that makes it remember, but I haven't had any luck. If it could remember your preference for seeing or not seeing the left hand menu that would be lovely.
Cheers and thanks as ever for the great work.