I have already commented on the fact that LT has a problem with Ellipsis. In fact, when I write in a dialogue where characters are stumbling on words, or interrupting their speech for thinking or taking time, the ellipsis (…) is refused by LT and a (.) dot is proposed instead. As I have plenty of dialogues in my writing, such a situation poses a concern.
I am on LibreOffice 24.2.6.2
Linux 5.15
Could you please post some full sentences, so we can better reproduce this?