I am not using any browser extensions. I restarted my phone after the iOS upgrade to 12.1.3 and the issue went away. Very strange. Here is my user agent string for reference:

Mozilla/5.0 (iPhone; CPU iPhone OS 12_1_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0 Mobile/15E148 Safari/604.1

Feel free to close this issue. I can reopen a ticket if it ever happens again.

Thanks