Hmmm, can you try clicking tools and see if it gives you an option to show the addresses and what happens to the tabbing at the top?
How can he possibly click Tools, when it’s one of the options he misses
I have never used Electrum on Linux, but a similar
problem seems to exist on OS X, maybe the following post may help :
Windows = Toolbars are on the top of the window itself, so if you make the window small and move it to the lower right corner, your tool bar will be attached to that little window.
Mac = Toolbars are ALWAYS on the upper left hand side of the ENTIRE SCREEN. Regardless of the size of the window. You must also SELECT the window (by clicking on it once and having it open on the top of all other windows) in order for the tool bard to show up on the upper left hand corner of the screen. (This is next to the Apple button that you click to "Shut Down")