# Kerning on export problem with certain trigrams

**URL:** <https://forum.glyphsapp.com/t/kerning-on-export-problem-with-certain-trigrams/35991>\
**Category:** Glyphs\
**Tags:** kerning\
**Created:** [March 16, 2026, 7:15pm UTC](https://forum.glyphsapp.com/t/kerning-on-export-problem-with-certain-trigrams/35991 "2026-03-16T19:15:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Lewis](https://forum.glyphsapp.com/user_avatar/forum.glyphsapp.com/lewis/32/6355_2.png) [@Lewis](https://forum.glyphsapp.com/u/Lewis)\
**Post date:** [March 16, 2026, 7:15pm UTC](https://forum.glyphsapp.com/t/kerning-on-export-problem-with-certain-trigrams/35991/1 "2026-03-16T19:15:50Z")

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Hi there,  
When I export the kerning pair LA behaves correctly. Until certain other letters appear _after_ the A. For example, in FontGoggles (also Adobe ai and ind), type LA and it looks fine, LAP is fine, however type LAS and suddenly the A jumps back into the L. Same also happens with trigram LAD, the L jumps back.  
The kerning groups in Glyphs are set up correctly. In the kerning panel everything is compressed, no open locks.  
What am I doing wrong?

 ![image](https://forum.glyphsapp.com/uploads/default/original/3X/a/6/a6398ad6eac534ef6b3738545b679bed4301ecd0.jpeg)

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**Author:** ![GeorgSeifert](https://forum.glyphsapp.com/user_avatar/forum.glyphsapp.com/georgseifert/32/259_2.png) [@GeorgSeifert](https://forum.glyphsapp.com/u/GeorgSeifert)\
**Post date:** [March 16, 2026, 10:06pm UTC](https://forum.glyphsapp.com/t/kerning-on-export-problem-with-certain-trigrams/35991/2 "2026-03-16T22:06:11Z")

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Did you add the kerning in RTL mode?

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<div class="post-metadata">

**Author:** ![Lewis](https://forum.glyphsapp.com/user_avatar/forum.glyphsapp.com/lewis/32/6355_2.png) [@Lewis](https://forum.glyphsapp.com/u/Lewis)\
**Post date:** [March 17, 2026, 7:37am UTC](https://forum.glyphsapp.com/t/kerning-on-export-problem-with-certain-trigrams/35991/3 "2026-03-17T07:37:50Z")

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That’s it! Somehow some RTL kerning snuck in there.  
I removed it and the problem is fixed

Thanks Georg!
