Apart from the described workaround (thanks for that btw.), do you consider the observed behavior to be a bug or not? In my opinion the upgrade progress is clearly lacking at this point. I would expect the unlock-state of all items to be reevaluated on upgrade. Especially if the tech-tree has been m...

Hi,

I just loaded a savegame from version .12, where I already had researched "Flamethrower". With .13 that should unlock both the handheld and the turret flamethrower. Unfortunately the upgrade process seems to have skipped unlocking said turret retroactively.