Recipe:
Create a new document
On the Master Page, create a new Layer: Layer > New Layer, giving Layer1
On the document page, in the Layers panel, right-click on the Master Page layer and choose Edit Detached.
Expand the Master Page layer, and select Layer1
Add an object to Layer1 on the document page.
Click Finish to end Edit Detached mode.
Switch to the Master Page, and in the Layers Panel, hide Layer1.
Result: The object disappears from the document page, but the page thumbnail in the Pages panel is not updated.
Master-Layer-Hidden.afpub