The program is breaking the composite glyphs in font styles that I created in different weights. This has happened to me many times. There is an instability in the program. I am using Font Creator 14 2888 version.
Are you using Complete Composites or Anchor-based Composites?
It is unclear what exactly goes wrong. For example, this might happen if you change anchors while having glyphs with auto attach. So please let us know how to reproduce this issue.
That said, here is an unofficial update with numerous improvements and bug fixes, so let us know your results.
I’m using complete composites.
The code in CompositeData.xml seems to be correct, but this was written many years ago, and since I do not create fonts with Cyrillic character sets, I have not tested it much.
A quick test works for me.
Check that you have the correct combining diacritical marks (e.g. gravecomb) in your font. This, for example, is the code for the glyph Igrave-cyrl
<Composite><!-- Cyrillic I Grave -->
<GlyphMapping>1037</GlyphMapping>
<Member id="1">
<GlyphMapping>1048</GlyphMapping>
<UseMetrics>TRUE</UseMetrics>
</Member>
<Member id="2">
<GlyphName>gravecomb.case</GlyphName>
<GlyphName>gravecomb</GlyphName>
<GlyphName>gravemod</GlyphName>
<Pos>Auto</Pos>
</Member>
</Composite>
Auto-positioning may give better results.
I position composite glyphs as “auto”. My previous message was misunderstood or I phrased it wrong. Composite letters in all latin and Cyrillic alphabets in the project I’m working on are corrupted. After I corrected the Latin alphabet again, I sent a picture in Cyrillic alphabet as an example.
Did you make changes to your OpenType layout features? If so, then you might have deleted the anchors, and then all auto glyphs will collapse.
It’s possible. I may have made such a mistake.
If the base and mark glyphs no longer have the required anchors, then it sounds plausible you indeed removed OpenType layout features.
I will mark this topic as closed.