Particle No Collision in Game

When I put the particle in the level, all the particles that collide are killed. If I start PIE, or standalone game, then they do not collide. I created this particle in version 4.19 and upgraded to 4.21. But it still worked with 4.21. After some time, I noticed that she no longer collided. Only in the level editor (viewport 1) does it collide.

Hello,

We’ve recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.

https://epicsupport.force.com/unrealengine/s/

Thanks