Random Yellow to Blue buzz conversion?

Just a moment ago, upon entering the Training room, specifically to check my most recently made Krea lora, I got quick notification of 1400 Yellow Buzz being taken from my balance and instantly refunded as Blue Buzz. The lora I was checking has trained fine and there was no errors. So essentially my yellow buzz just converted into blue without no apparent reason.
I've filled the tech support ticket, and bringing my issue in here, just in case anyone else was affected by this.

An Update! A day later I got my buzz refunded! Thank you tech-support for looking into my case, I appreciate it very much! :D This glitch seems to be not as common, yet still, I hope it will be patched to save other users from such inconvenience.