Sometimes when I'm typing something quickly in code editor the NetBeans suddenly becomes non-interactive and writes to HDD infinetely.
linux fnotifystat utility shows that the NetBeans java process writes into .netbeans/12.0/var/log/uigestures file. The file grows quickly and splitted by by uigestures.1, etc.
Looks like the IDE falls into infinite cycle due to NPE, see attached logs.
I'm able to close non-interactive NetBeans window somehow.