I've moved this from the Using the Community forum (which is the forum for issues using the forums) to theXD forum so that proper help can be offered.
Sorry to hear about the trouble. We'll need to test this on our end so could you please share a few more details like:
We're here to help just need more information.
So first i'm on Windows 10 (64bits), using XD v40.1.22.
It happen on multiple files and on multiple fonts, I attach the files heres and the "glitched" .svg export but I cant attach the xd files, if you want to check them I can wetrasfer them
Thanks for your help here, sorry to answer you this late..