Do valid newer TLDs still get rejected by older websites?

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ICANN published new Universal Acceptance guidelines this week.

For people mainly using .uk, .co.uk or .com, this issue is easy to miss. Some older systems used to reject longer extensions such as .london or .photography because their checks expected shorter TLDs.

Has anyone seen a recent example on a UK client site or online service?

ICANN source:

https://www.icann.org/en/announcements/details/icann-publishes-universal-acceptance-expert-working-group-guidelines-09-09-2026-en