By now, Microsoft Word supports entering LaTeX equations without any further installation needed.
I think this would be a great thing to have in LibreOffice too.
There is already the TexMaths extension, which works ok in Writer, but does not provide inline equations in Impress.
Maybe some of that code might be helpful.
I don't see any reason why we should not be able to ship a LaTeX binary with LibreOffice.
Steps to Reproduce:
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Thanks for reporting this issue.
It seems like a dupe of bug 73593
*** This bug has been marked as a duplicate of bug 73593 ***