The probable cause here is that I nest tremove inside a tinsert, with positions set, which modifies the table before the tinsert is called. This is obviously bad. I just need to fuel up with some additional tea, then I can get to fixing this.

In the meanwhile, in case anyone inadvertedly breaks their sorting configuration via the config ui, you can unbreak it with /script AQTCFG.global.sortFields = nil. It will restore it to defaults.

Also, I will include code that will automatically try to fix any corruption to this configuration in a later release.