Orange/yellow flashing effect stays on player after respawn (also in Edit/Build mode)

Summary

After a player is eliminated or respawns in a UEFN session, an orange/yellow flashing visual effect appears on the character and doesn’t go away. It persists into Edit/Build mode. It doesn’t appear on a fresh session start before any death. It reproduces on a brand-new default template island with no custom devices or Verse.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Assets

Steps to Reproduce

Create a new island from a default UEFN template.
Launch Session and join the game.
Confirm the player has no flashing effect.
Respawn or self-eliminate once the game starts.
After respawning, the player flashes orange/yellow continuously.

Expected Result

No visual effect on the player after respawning.

Observed Result

A continuous orange/yellow flash stays on the player, including in Edit/Build mode. It also hides Visual Effect Powerup effects such as sparks until it goes away.

Platform(s)

Windows PC + RTX 5090, Nintendo Switch 2

Video

Additional Notes

Only a full restart of the project or session clears it.
Players who join late don’t see it.
It began after a recent Fortnite/UEFN update.