Power-Up Tokens Show as Red

During a race in London last night, I think two of the riders in front of me triggered Feather Weight tokens. That is, the token icons appeared above each of them.

However, instead of the green backgrounded icon that gradual diminishes, they both appeared as red backgrounded icons that didn’t shrink, just disappeared after a few seconds.

Was this just a glitch in my view or some different indication of Power-Up usage

It was a glitch.

I have seen this too on several occaisions. Also in Meetups with only a handfull of riders.