Dialog Box too big in Libreoffice Write

Hi! I’m using Leap 15, Plasma desktop 5.12.6, Nvidia proprietary driver 390.87. I’ve installed the TexMaths extension for Libreoffice, and have an issue with the equations dialogue box. In particular, it is too tall to fit on my screen (1600x900). Screenshot is linked here.I’m not quite sure what to do about it. There is no slider on the side to get to the bottom, I can right click to resize, but that would require more screen. I can set the window size and then move the box up to access the lower buttons, but then I have nothing to grab to move it back down. There should be some way to scale this box, but I can’t find it. Any thoughts?