Glyphs 2: Guides are not shown as lines

[SCarewe (Sebastian Carewe)]

Visibility of guides

Hello, I’m having trouble figuring out what dictates the stroke width of the guides, both global and local. It changes as I move the guide or when I move around the window-- from heavier to lighter and back again, sometimes disappearing altogether. But I don’t seem to be able to control it. Is there a way to make them more visible and/or consistent? Any guidance is appreciated. Thanks so much.