Um so pretty much there is a glitch in slime survival where if you blink while decoyed, you will get stuck at the end of the blink and remain invis even after the decoy disappears. This, as you would imagine, makes you very difficult to spot, and if you do get hit by a slime somehow, you are still invis and stuck (for both game modes). You can still be tracked etc, but I'm fairly sure u do not get the glowing effect. It is consistent on all maps, and can be pulled off at any time just by running around with a decoy until you find a blink, placing the decoy, and using the blink. I have just used it in testing to float in the air, but I am sure some more creative uses that make it near impossible to be found and/or hit are possible. In the screenshot below, I am in f5 mode with hitboxes enabled to show that I am indeed invisible and floating in the air.
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