I finished all my field research tasks last night and attempted to capture Raikou, but ran out of Pokeballs. I fled the capture, assuming I could come back later and do it again once I had collected more.
Today the prize is still there, but every time I click it takes me to a blue and white screen and nothing happens. I have rebooted and signed out to try and restart it but now I don't know what to do. Any ideas? Has anyone experienced this?
Best Answer
Update your game
As of 19th August 2018, Niantic has released an update which appears to include a patch that addresses this bug. The Android version is v0.115.3, I'm not sure of the iOS version number.
It's not a forced upgrade, so you may have to go into the Play Store/App Store on your device, and update the game manually.
What caused this?
Niantic released a statement regarding this bug:
It seems that feeding a berry to a Pokemon, fleeing from the capture screen, then re-entering the capture caused this issue.
What about my lost research task?
If your research task Pokemon capture was somehow lost in the process, then you may be able to recover it. According to user Borinkito who experienced similar issues: