Hi.
We can't recreate what we think you're saying, that, for example, if we use the zoom tool to zoom way in on a clip and then later execute Zoom Out Vertical. When we do that it zooms out as expected so we assume that either we may not fully understand the issue. or that what's happening on your system is an anomaly of some kind.
Please make a support ticket and if at all possible include a short video showing the behavior that's annoying you so that the support agent can immediately understand it and assist as quickly as possible.