I was adding new methods to an interface. (a groovy class is implementing it, this script is a groovy bean)
The syntax check took more than 10 seconds
After the square went yellow it was still showing that syntax analysis was still performing (see screenshot)
The first snapshot was taken when typing a new methid
The second one was taken when duplicating metod signature using Ctrl+D
It seems that Spring Facet feature performance impact is still unacceptable