Please take a look at the attached screenshot ...

There you can see, that the "Shortcut" column ist too small. On my system a curious mechanism hat translated the abbrevs for SHIFT and CTRL into the german expressions UMSCHALT and STRG.
These ones do not fit in the column (which is not resizeable).
Even the "Shortcut:" entry-field seems to bee too small. I have no chance to see, which key is assigned to "Previous Tab".

Please make the layout of that whole thing a little bit taller.

Another enhancement request:
The commands which are displayed in the "Customize Commands" dialog depend on the current kind of tab on top the UI. I would like to see some tabs themselves in the dialog-box in order to see, which possibilities are there at all.
I hope you know what I mean ...