Hi, I recently got some feedback on a font I submitted (Tuscan Modular).

After I received feedback the last time I changed the ascender height to make room for the diacritics and submitted again, but the second time I got the exact same error message?

"- Font is cropped in height under some systems (incorrect ascender/descender settings)"

Was the ascender height still too low? Is there any particular system/software/library I should test on?

I remember a font I submitted earlier where I received some feedback that you used the PHP GD-library, here I started testing using that library, and I'm trying to reproduce the error so that I can fix it instead of just making shots in the dark.

I might have found the error by myself, I found some residual custom parameters in the glyphs document from exporting and importing a design.

You are on a Mac so you do not see this problem. If you have access to Windows try it there and that's where you will see the problem. If you have MS Word on your Mac, the clipping problem might also show in that program. The value of your ascender and descender does not matter. What you need to adjust is the value of the WinAscent and WinDescent. It is really easy to fix.

Get your bbox.
Set the value of your WinAscent to the value of the top of your bbox.
Set the value of your WinDescent to the value of the bottom of your bbox.

Generate the font and try it on Windows, without using Adobe programs.

I do not know your font editor so I cannot tell you where to find the parameters of your bbox and where to set the WinAscent and WinDescent. Besides, I only know how to do it in a specific font editor but there are others here who can help you with other font editors.