Lut-speller compound letters not accepted but suggested

[rueter]

This issue appears to be related to Issue #1 where
all words with multi-character symbols seem to be at issue.
tiʔəʔ [sčətxʷəd] [gʷəl] [x̌ʷul̕] [ƛ̕uʔibibəš].

On MacOS 13.5.1, TextEdit Spelling and Grammar does not accept ‹sčətxʷəd›, but it suggests ‹sčətxʷəd› in the same spelling.

[rueter]

Here are some word forms in context.
(1) Words in curly brackets{} are not accepted but suggested.
(2) Words in square brackets [] are not accepted, and no suggestions are given.

{sčətxʷəd} ʔi tsiʔiɬ [ƛ̕aƛ̕ac̓apəd]
hay, ʔah tiʔəʔ syəyəhub ʔə tiʔiɬ {sčətxʷəd} ʔi tsiʔiɬ [ƛ̕aƛ̕ac̓apəd].
tiʔəʔ {sčətxʷəd} {gʷəl} [x̌ʷul̕] {ƛ̕uʔibibəš}.
[x̌ʷul̕] {ƛ̕uʔibibəš}.
{gʷəl} tsiʔiɬ [ƛ̕aƛ̕ac̓apəd] {gʷəl} [dᶻəgʷaʔ]

all words are accepted by lang-lut/tools/tokenisers/tokeniser-disamb-gt-desc.pmhfst
and hfst-ospell -S -n 5 tools/spellcheckers/lut.zhfst