Button doesn't work when parent nested canvas been deactivate and reactivate again

run SampleScene (this is a definitely new scence created form 2D tempalte on Unity 2021.3.6f1) from the attachment under Unity 2021.3.6f1, deactivate the nested canvas and reactivate it again, the button underneath won't work anymore.

it works at least on Unity 2019.4.x, is it a bad practise to have nested canvas? or this might be a bug of Unity 2021.3?

8314260--1091016--SampleScene.7z (3.91 KB)

There are a couple of recent forum posts where are people having issues with nested canvas specifically in 2021.3.6. Supposedly 2021.3.5 doesn't have those issues. Take a look at are not difficult to find and they mentioned potential workarounds.

[quote=“karliss_coldwild”, post:2, topic: 889214]
There are a couple of recent forum posts where are people having issues with nested canvas specifically in 2021.3.6. Supposedly 2021.3.5 doesn’t have those issues. Take a look at are not difficult to find and they mentioned potential workarounds.
[/quote]
thank for your information, after this post, I did find some threads that reported the same bug as I did, and alreay switched back to Unity 2021.3.5f1, it works as expected.