I know its not the first time this is written here, but none of the solutions work. (https://www.youtube.com/watch?v=tM8YdRYc8Zk, https://intellij-support.jetbrains.com/hc/en-us/community/posts/206152119-Can-t-type-in-editor-window)
What is more strange is that it never had happened to me until this morning. Then it happened again less than one hour ago, and now it happens after 10 min of restarting Pycharm. (It's the only way I managed to fix this issue)
So.. what should I do?