Photos not going to My Photo Stream on iPhone 12 Pro

Ever since my phone was updated to the update that was released after 14.1 and before 14.3 (don't remember the exact number) when I take a photo it uploading to the photo stream is intermittent at best.

For example, I took 7 pictures today outside and when I returned home and on my Wifi network, only 2 of them appeared in the photo stream.

Sometimes, if I take a picture at home, it will go to the stream, sometimes not.

If I take a photo with another device (another phone, iPad) it goes to the stream quickly.

Before that version of Ios 14, it worked perfectly.

Could a bug have been introduced?

I have turned it off, then back on, restarted the device, etc.