Numbering and bullets in Word docs keep disappearing

jg_ch_ad sorry to hear you've also been having this issue. FYI, this is a community forum, so you won't find anyone that actually works for Microsoft here. Recommend submitting something to the official feedback forum. If you have some sort of shared file space among you and your partners' firms that is accessible to everyone involved, I would try saving a copy of your template file in that shared space and then opening the developer tab in your document(s), opening document template, and inserting the path to that shared location as the document template. Check the path and make sure it's a common location that is visible to everyone using it (you can still put restrictive permissions on the template itself to prevent others from editing, so long as it is at least readable to everyone). That has worked well for me, but still have to avoid doing large scale formatting changes while track changes is on and lots of people are in the file. It also allows anyone to quick open up the developer tab/document template window and toggle on the "automatically update document styles" box, click ok, wait a second, open it back up and uncheck the box (for some reason that I don't understand, you want to leave it unchecked) - that should make everything go back to normal in one click (technically like 8 clicks). Another thing you can try is completely redoing any of your custom multi-level lists and bulleted list styles from scratch in your template, just in case there is something a little buggy in there. Probably the biggest thing I've found though is that there is no point in doing any formatting while track changes is enabled and/or while coauthoring. So generally toward the end of a deliverable, once track changes are cleaned up, I ask everyone to kindly bug off out of the file, reapply the template styles, and send. Not ideal, but a means to an end.

Best of luck!