Abilities not going off

I realize this is a pretty vague issue it's difficult to provide evidence for, but over the last 6-8 months or so I've been seeing more and more occurrences of activatable items and abilities not triggering on the first press. Tonight Had a game tonight where it was especially apparent with, as Vlad, that abilities and activatables (specifically Zhonya's) just would not trigger despite being pressed multiple times, often 10 or more while flailing on them trying to get them to go off. In addition to Zhonya's, Sanguine Pool was also affected. The most memorable instances of this occurred when either held in place by either Jinx's Chompers or Morgana's Binding. According to those abilities they are both 'roots' and should prevent movement but nothing else. Am I missing something here?

This does not just include ability use in response to roots but is generalized over most situations I can think of. Has anyone else been noticing this over the last 6 months or so?