i believe when changing the size of "thumbnails/details" , we should have another slider for the size of the text also (the name of the brush ), because when i push up the size of the icon , the size of its name doesnt change and doesn't fit the window by staying on when line,
if we have another slider of the text , its will be perfect, and also if the name of the brush is long it should be automatically be written in two lines instead of one, specially if the size of the icon is bigger than two lines of the name of the brush.

and by the way you should add a feature to be able to upload photos here like github, i tries to upload a photo but all i got is a text lol , i don't know to upload a capture