I came across some weird behavior with the Display switch on subnets.

Whenever i use an expression like $FF>150 for example, on geometry nodes the object gets hidden before and on frame 150, and 151 and up it's visible.
So i would expect the same behavior on the display switch on a subnet but unfortunately it's acting weird. I save the file with the playbar set on a frame after 150. Then i open it, works fine, the subnet is visible. I drag the playbar to before frame 150, the subnet disappears as expected. Drag it back to beyond 150, it doesn't reappear. (?)
Render the scene and it works as expected but the viewport doesn't get updated.
Keyframing instead of an expression acts the same.

Is there a way to make the viewport re-evaluate this value?

Hope i'm making sense.
BTW, i'm using 12.0.581


Edit: I found out that setting the visibility of geometry off and back on again in the display options on the right of the viewport (the glasses icon) does the trick but it's a manual solution.