Exporting to Microsoft Word
The default Confluence to Word export feature currently uses legacy .doc format. This means exported contents are not compatible with most modern word processors because .docx is the supported standard. It also makes it difficult to add support for Confluence page contents (also known as macros) created by apps like LaTeX Math.
This issue is currently tracked here: https://jira.atlassian.com/browse/CONFCLOUD-68305
Companion app: Advanced Word (Docx) Exporter
In order to work around this issue, we have released a FREE app:
Advanced Word (Docx) Exporter for Confluence
Using this app, you can:
Export Confluence pages to Word in DOCX, the industry standard format compatible with most word processors
Supports exporting LaTeX formula as well as other commonly used macros like tasks, panels etc.

Export to Word using Advanced Word Exporter app
We will keep this app FREE forever for customers using LaTeX Math for Confluence. You can install it from the Marketplace listing here: Advanced Word (Docx) Exporter for Confluence