I am mostly unable to 'share' web pages using the share menu, via any browser.
On my iPad the Safari share menu lets me select mail (Apple's version) and then 'mail' the website information for the site I am viewing - but this does not always work. It does works immediately after launching the Safari app, but seems to fail if the second time, or thereafter. It works again (once) if I shut down and restart Safari.
I 'believe' I have the same problem with Chrome or Firefox, but have not tested as carefully with them.
This is on an iPad Air (4th gen) running IpadOS 16.5.1(x). Model MYFY2VC/A