The preview only shows the first glyph of the editing window

[MK.Kim (Minki Kim)]

Hi,
I’m making vertical Korean font on Glyphs 3.3.1 (3343), macOS 15.4.
I recognized that preview beside the edit window doesn’t show the letter editing during vertical mode. It seems to show the first glyph of the edit window.

I didn’t know this issue because I have used third party script for previewing. For some reason I cannot use the script right now. So can you help me?

I add picture for understanding.

[GeorgSeifert]

I’ll have a look.

Until then, use less text in the edit view. I recommend to use one or two lines. If you need more text, you can put it into the sample strings to be able to switch between them.