Several Tibetan shorthand contractions misbehaviored with Microsoft Himalaya 5.21

[KrasnayaPloshchad]

The following Tibetan shorthand contractions works with IE, Edge, BabelPad and LibreOffice for Windows, but not works with current versions of Firefox and Chrome, using Microsoft Himalaya 5.21 on Windows 10.

ཀེུན་ཀོུབ༹་ཀེུས་ཀླེུབས་ཀློུག་སྐྱེུ་ཁོུས༹་ཁྱོུག་ཁྲེུད་ཁྲེུད་ཁྲོུད་གོུག་གྱིུག་གྲིུན་གྲིུ་གྲོུན་གྲོུབ་དགེུན་དགེུགས་དངྲོུབ་དགྲོུབ་ཆྲོུལ་རྗེུན༹་ཉི༹ན་དྲིུག་གདེུན་བདོུས་འདེུད་སྡིུབ་ནོུགས་ནོུར་བློུན་བརྩོུས་རྫྲུལ་རྫེུས་ཞོུལ་

[khaledhosny]

Can you attach a screenshot of the correct (expected) rendering.

[KrasnayaPloshchad]

OK, this is what I have seen on LibreOffice for Windows, I think this is expected results.

This is a screenshot took on Firefox when I input in WYMeditor

I also took a screenshot from the original web page, the content is collected by Andrew West.

Note I can’t promise all the failed sequences was copied to here because the table is too long.

[behdad]

Looks like we need to tweak a few combining classes...