Hide Rest of model is very useful. It removes everything else in the model to allow us to work inside a specific object.
However, it doesn’t work well with section fills. The section fill vanishes, as the rest of the model, as it is supposed, but it still interferes with modelling. So making section fill vanish, in this case, it’s actually worse than letting it be visible.
You have to decide:
I think the logic should be, having the section face vanish and it wouldn’t interfere at all with the modelling actions,
You keep it visible, even if Hide Rest of Model is active and so, it can intefere with the modelling actions as usual.
This should be wysiwyg, if you see it it acts, if it’s hidden it’s like it’s not there, and it doesn’t interfere.
In the example below you can see me trying to measure a wall thickness with the tape measure tool. I cannot and so I have to activate back edges so I can nail the edge behind the section.
Thanks for your attention.