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The text size option in % is for the admin pages. And it existed since long time 
Admin pages haven't been modified this time.
For the rest of the site, currently the only possibility is the checkbox "Larger text size" if you want larger text (it makes it 120%).
The font is supposed to be the same as before: Verdana, or the default sans serif font of the browser. I think before there was also Arial in the list, so I added it back for those who don't have Verdana, so they have the same font as before.
It may fix the size issue at the same time...
It is possible that some items are in a different size, depending on the default settings of your browser. Now I fixed them to avoid the random size depending on the platform (on my PC, before theses changes, it was a little too small in Edge...)
Is it better now?
Otherwise, can you make a capture of the issues?
It will be easier to try to find what to tweak, which I'll do tomorrow evening.
If it is just a little different but not problematic, you can also just be used to it. At some moments things can slightly change, it is not catastrophic
Admin pages haven't been modified this time.
For the rest of the site, currently the only possibility is the checkbox "Larger text size" if you want larger text (it makes it 120%).
The font is supposed to be the same as before: Verdana, or the default sans serif font of the browser. I think before there was also Arial in the list, so I added it back for those who don't have Verdana, so they have the same font as before.
It may fix the size issue at the same time...
It is possible that some items are in a different size, depending on the default settings of your browser. Now I fixed them to avoid the random size depending on the platform (on my PC, before theses changes, it was a little too small in Edge...)
Is it better now?
Otherwise, can you make a capture of the issues?
It will be easier to try to find what to tweak, which I'll do tomorrow evening.
If it is just a little different but not problematic, you can also just be used to it. At some moments things can slightly change, it is not catastrophic