Alt+Scrollwheel zoom in piano roll view stops responding

[Sion Jones]

Anyone else seeing this glitch? I can zoom in and out in the timeline fine using alt+scroll wheel, but it frequently just stops doing so in piano roll view, for some reason. I can still scroll horizontally and vertically, but not zoom.

[Christopher Theodorou]

Also having this issue. Sad to see no response from May. It's incredibly disruptive to the work flow. Is it a known bug?