Board not rendering for some iOS users

[hinsley]

One user has reported the board suddenly (i.e., it was working beforehand) does not render on two of his iOS devices on the same network. The application was not updated around the time the issue began, so I suspect this is caused by some sort of network configuration problem or firewall This is no longer a suspicion -- see below.

The user sent this screenshot:

I could not reproduce the issue on an iPhone 12 Pro with Browserstack:

[hinsley]

The user has reported the site works fine on the same network with a Windows laptop.

[hinsley]

The user said this issue was present on both Safari and Firefox on iOS, and that the device had not been fully updated. I suspect it may have something to do with the use of BigInt in the board rendering Javascript file.