Adding handels in Glyphs 2.0

I can no longer add handles to a straight line by option-clicking on the line, since I updated to 2.0. Is there another way to add these handles?

Why cannot you add?
it works as previously did.
Make sure that handles are not hidden behind the nodes.

Now I see that it works, but the problem is that the path that resulted from a ‘Remove overlap’ apparently isn’t closed. I will fix that, so the handles can be added. Thanks.

What do you mean? Can you post a screenshot?