I have seen this behaviour after upgrading from 18.104.22.16868 to 22.214.171.12489. The same version Rikai.Design used and he failed also but TTSneko had no issues. Strange. Ansgar mentioned, this is an issue of v11 but as v12.0 worked for me and 12.3 not, there might be a new regression or any side effect caused by ... OS? By the way, I used HeidiSQL on HP Notebook with up-to-date Windows 10 and nVidia Quadro P600. Downgrading to 126.96.36.19968 solved the issue on the HP Notebook.
A quick Test on a Lenovo Notebook with W10 and nVidia Gforce RTX 2060 showed the same problem with 188.8.131.5237. Upgrading to 184.108.40.20689, same problem. Downgrading to 220.127.116.1168 and the problem was solved.
In short words, at least for me it looks like a regression between 18.104.22.16868 and 22.214.171.12437. I did not check any nightly.
Hopefully, this helps to discover the issue.
Thanks for this incredible piece of software, I (not only) should really think about donating.