Bayern Munich supporters protested against football fans being impacted by the death of Queen Elizabeth II during their Champions League fixture against Barcelona, unfurling a banner that called for authorities to "respect fans".
The Premier League postponed a full fixture programme last weekend following the passing of the UK's longest-reigning monarch, with the English Football League doing likewise.
While English top-flight football will resume on Friday, Manchester United's match against Leeds United, as well as Liverpool's trip to Chelsea, will not take place due to policing concerns on the weekend of the Queen's funeral.
The situation has also impacted European football; Arsenal's Europa League clash with PSV has been called off, while Rangers' Champions League meeting with Napoli was pushed back by one day.
Policing issues also mean Napoli are unable to take any supporters to Scotland for that match, which coach Luciano Spalletti described as a "real penalty" on Tuesday.
Against this backdrop, Bayern's fans displayed a message in the 26th minute of their match against Barcelona, which read: "Last-minute match delays and bans because of a royal's death? Respect fans!"
Second-half goals from Lucas Hernandez and Leroy Sane helped Bayern to a 2-0 win over the Blaugrana, maintaining their perfect start to the Champions League campaign.