Nuendo 7 waveform disappears when sizing with zoom tool

In my arrange window, whenever I size a selection using the cursor zoom tool, the waveform disappears until I release the mouse click (regardless of whether I’m zooming in or out).

Never had this issue with older iterations of Nuendo. Is this a preference option I’m missing? Bug? It’s very frustrating.
Thanks in advance.

PC Win 10 Nuendo7 Intel i7 7800x 32g ram Nvidia GeForce GT780