A workaround I've found so far (working on Windows) is to minimize the app (often to do this I have to Ctrl+D to minimize all windows and view my desktop), then hover over it in my taskbar and select it again. Sometimes this opens it, still small, but now with the option to drag it open. This might not work for everyone and doesn't always for me. It's not a solution, but a workaround, and my palette layouts are always messed up afterward.