safari develop not showing css files

iphone 11 plugged into macbook pro. Bring up safari on macbook to inspect website being displayed on the iphone.

two issues:

1) unable to reload css files. Clear cache on both machines, refresh but the old version of the css file continues being used. Is there a hidden cache. THE ONLY WAY SEEMS TO BE RENAMING THE CSS FILE ON THE SERVER. Is this the best apple can do?

2) css files are not shown in develop.
safari develop not showing css files
 
 
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