Possible bug: pan-asian tech research strategic bomber crash (PC version)

Twice, my research into strategic bombers crashed. Like cancelled without notice.

It seems i also dont get resources refunded when it suddenly disappeared

So, ive started researched strategic bombers today, for level 3 this time. It still had almost a day to be completed, but later today i saw the research was cancelled and the slot empty - and no resources returned. (Pan-Asian)

I cant exclude a mistake on my side, but twice with the same type of research is strange, suspicious.

So it might be a bug on the research process. I did not ordered the cancellation - not on purpose, at least.

Its PC version, maybe i accidenly touched an unknown shortcut key? Ive no idea why the research was cancelled

for the strategic bomber, and it seems the resources were not returned either. And no: the ordered research was NOT completed, neither i used gold for it.

So unless i cancelled the same type of research twice on accident, it looks more like a bug.

I hope anyway can check the issue or affirm the bug from own experience

CZ