Floodlights flicker, then stop functioning (almost) entirely

[irkedIsaac]

Minecraft Version

1.21.1

Immersive Engineering Version

12.0.0-182

Expected Behavior

Supply floodlight with LV power, tap it with the screwdriver (or give it a redstone signal, i'm not your mom), watch the fields around my house light up.

Actual Behavior

When the floodlight should light up, it instead flickers lights in the area it's projecting to for about 1 second before going totally dark apart from the floodlight block itself, which still emits light.

Steps to reproduce

1. Acquire POWER (my survival setup is like 10 thermoelectric generators in a box, which should be plenty sufficient, but I also tested with the creative accumulator in singleplayer with no other mods)
2. Connect directly to floodlight.
3. Angle floodlight to your favorite direction
4. Smack a lever down next to it
5. Flick it
6. Remain in darkness

Screenshot from my singleplayer testing - the wall is only 20 blocks away, and should be lit up by the floodlight.

Debug Crash Log

https://pastebin.com/5F12jbHu

[pklebba]

+1, same issue.

It appears only on 12.0.0-182, on the previous version everything works fine.