Created attachment 112999 [details] the formatting tab There are 2-3 pairs of identical looking buttons (e.g. for left subscript and power), especially in the "Formats" tab, differentiable only when one points to it with a cursor and a hint comes up. The squares for superscript/subscript can be resized to help differentiate them.
Sounds reasonable for me. I need to open the tooltips to understand them. Reproducible with LO 4.4.0.3, Win 8.1.
Power Subscript Right Superscript Left Subscript Left Superscript Top Subscript Bottom New Line Small Gap Blank No Space left center right Vertical Stack (2 elements) Vertical Stack Matrix Stack