I just noticed that the double underscore glyphs don’t work anymore in Version 2.3b (856).
There is a new way of adjusting the side bearings of aligned glyphs. You can add an adjustment value as a metrics key:
I have a look at the double underscores.
Thanks! I tried it, it could be a possible solution, the only problem is that the adjustment value gets added in all the masters. Is there a way to have different values in different masters?
You can add a value for each master as with any other metrics key. Use double equal sign.
Tried that, it was resetting to only one equal sign. I restarted Glyphs and it seems to work now.