RTL kerning problem with mirrored and bidirectional characters

Glyphs
1

Hi,

Kernings between Arabic and characters like “!” or “)” was ok in Glyphs 2, but when i open it in Glyphs 3, they disappear.

Even I try to kerning again in Glyphs 3, its not in the exported file. when I save the file and open it again, the kerning disappeared.

Glyphs 2

Screenshot 1402-10-08 at 1.44.51 in the afternoon
Screenshot 1402-10-08 at 1.44.51 in the afternoon1030×591 34.1 KB

Glyphs 3

Screenshot 1402-10-08 at 1.45.02 in the afternoon
Screenshot 1402-10-08 at 1.45.02 in the afternoon946×619 21.6 KB

2

The handling of RTL kerning has changed between Glyphs 2 and 3. There is a dedicated RTL and LTR kerning now. Most of it will be properly converted, but it seems not all of it. Can you send me a file that show the problem?

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