I reported this as a bug back in March but despite other people confirming both that report and another identical one from someone else both tickets expired. For me and many others (possibly everyone, if this doesn't happen to you please let me know) as soon as I activate a burrow cam in any of my zoos, all the foliage in my zoo flickers uncontrollably and permanently. As soon as I turn off the burrow cam it stops. I've seen people with both Radeon & Nvidia have this issue since March so it can't be driver-related. I've tested this with two zoos, two game-modes and two different animals and it happens every time.
I've raised another report here, please add your feedback to it if you are also having this issue.
I've raised another report here, please add your feedback to it if you are also having this issue.