Since the mainline update, this is frequently happening with my octavia.
As you can see on the sreenshot, the ability is active but the duration timer isnt working properly.
edit: i can certainly say, that has something to do with operator modeĀ
edit2: you can easily reproduce it with Wips, just place some reservoirs check the number in the UI (1-6) and go into operator mode, the number will vanish.