Gmask tracer auto tangents

Bit of a weird one here. One of our flames will not remember auto tangents for the gmask tracer.
This has happened through several versions of flame, all projects and all users.
We have tried saving the defaults and preferences many times but they always reset to off.
Has anyone else ever seen this behaviour?

When you create preferences, they are not saved until the application has been closed. Perhaps there is an issue with the app shutting down cleanly. I would do a quick test by changing a preference, shutting down then starting up and seeing if the change remains.

Now that I did not know Tim, I shall do that and report back.

So far, so good!

You must set the default value in Preferences → Action → GMask Vertices.

That’s what I’ve been doing, but it’s not sticking.