Yep. I've been creating my own local stylesheets under Stylish, including a default which pretty effectively nukes social elements and fixed headers, with some collateral damage I _may_ fix selectively on specific sites.
If you're naming your primary elements, or ascribing them values of "share" or "social" (wildcard search), they're likely to get nuked.
Print mode (offered by websites) so often 1) launches the actual browser print dialog and 2) closes the fucking page when the dialog's closed that I've largely abandoned use of it.