occasionally, In game my menu will "freeze" up and only dispaly that element group. I can still select from that group, but I cannot select another. clicking the other element group symbols just highlights or de-highlights the group icon. shutting down and restarting tpt is the only way to rectify this thus far.
BMTL doesn't break on an EMP blast. The wiki says it should , https://powdertoy.co.uk/Wiki/W/Elements:Electronics.html#Electromagnetic_Pulse .
If you make a vial of rubidium and then use LN2, it doesn't work either.
On mac osx lion, whenever i try to open a save it says "Save file corrupt or from newer version" and i am in the latest version, this bug happens even on very old saves