Unable to set negative alignment zone in Glyphs Mini

Glyphs Mini 2.1.7 (119).

I’m trying to modify a font’s alignment zones in the Info tab.

When I click the refresh arrow by Alignment Zones, it generates a zone below the baseline.

The width of the zone is too wide, but I’ll try to change that. So, next I manually try to change the zone width to 15.

And after I press Enter to accept the change, it displays my edited zone with the new width, but removes the ‘-’ sign before. It changes to a positive value.

And yes, it moves the zone above the baseline in the Edit tab.

Is this a bug? Or am I somehow ‘doing it wrong’?

Thanks in advance for any help.

I uploade a fixed version.

Thank you. Looks like that it fixed the problem. :grinning: