Mastodon Semi-automatic tracking crashes

Dear all,

I have been using the Semi-automatic tracker present in Mastodon, and sporadically I have mastodon abruptly crashing while the tracker is working. This basically crashes FIJI and I need to force kill it and restart. which can be annoying especially if things have not been saved for a while (meanwhile I now save after every successful usage of the tracker). Has anyone experienced this as well? Unfortunately I do not have any log to show now, but I send you an example image here.

Any help is really appreciated!
Thank you,
Gustavo