HT Letterspacer Not Starting in Glyphs 3.3 (3322)

Am I the only one having this issue? Since upgrading Letterspacer will not start/work.
I have tried all the suggested fixes I found in forum but nothing seems to be working.

Any advice on how to fix this?

True, it’s also not starting for me. It works in 3260. No error is reported in the Macro panel.

I just fixed it.

I am running Glyphs 3.3 (3326) and I am having the same issue with HTLS Manager. No error given in the macro window.

I had fixed it in my branch. Forgot to send a pull request.

Merged. Thanks, Georg!

Thanks @GeorgSeifert!