symbola + zero-width-joiner + linewrap

When using a Symbola font and inserting the zero-width-joiner (ZWJ) character (u+200d) between the characters of a word, Writer correctly does not split the word.

However, line-wrap is occasionally incorrect, in that it is “too aggressive”, and will move an (intact, Symbola word with ZWJ) to the next line, yet there is room on the current line for that word.

In the image below, the word underlined in orange should not have been moved to the next line, as there was room on the previous line (in green) for that word:

image

Is there a setting or configuration that controls the way Writer line-wraps a unicode font with ZWJ in it?

Version: 25.8.4.2 (X86_64)
OS: Windows 11 X86_64
UI render: Skia/Raster

In cases like this please upload your test-file. (Especially to check for more “unusual” spaces.

Imho the first place to look is not font, but language, where hyphenation-rules exist. But for your symbols language should be “none”.

Formatting Aids