I found that, if Ccd is enabled, the 1st hit/impact is impossible to be ignored at a collision group filter.
Is that a limitation, a bug or a missing feature or may be some configuration that was not enabled?
The jme3 thread: https://hub.jmonkeyengine.org/t/collisi ... y/38770/16
basically I set Ccd as
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and at the collide() (that is the collision group filter) I just return false (for this test) so no collisions should happen,
but with Ccd enabled, the 1st collision always happen, and subsequent ones (when the sphere and a box floor are overlapping) will not happen as expected.
for now I only have the java example at that forum, I need some time to learn how to prepare a test case for this forum, sry :/