Incorrect mark positioning in vertical text preview

Glyphs
1

I noticed that marks are misaligned in the vertical text preview in Glyphs.

スクリーンショット 0007-02-23 10.35.47
スクリーンショット 0007-02-23 10.35.47457×420 35.6 KB

When I export the font and check it in a browser, it looks fine.

I’m working on a font where mark positions change between vertical and horizontal text, so this issue makes it difficult to adjust them properly. (Though marks are only used for some rare characters.)

2

I’m a new user, so I could only upload one image. Here’s what it looks like in a browser:

image
image216×325 4.11 KB

3

Can you send me the .glyphs file and the text used in the preview (send a private message in the forum or an email to support at this domain).