This problem related with auto rotate a delay parameter in preferences|misc.
How to recreate the problem.
When Delay parameter set 60.
- push u key
- push + key x 6
- Application freeze
When Delay parameter set 30.
- push u key
- push + key x 3
- Application freeze
MacOS 10.11.6
Wings3D 2.1.2
How to recreate the problem.
When Delay parameter set 60.
- push u key
- push + key x 6
- Application freeze
When Delay parameter set 30.
- push u key
- push + key x 3
- Application freeze
MacOS 10.11.6
Wings3D 2.1.2