Hello, @Alex T⚜️ @LeonidS @unateam So here’s what I discovered while digging into the time‑shift issue. I realized it’s not really a bug, but more like a built‑in behavior (or however to call it). The language barrier really didn’t help here. :)

In polyglot-settings, the default date and time format is: (D MMM YYYY h:mm:ss a)  

For the correct display I had to change it to: (DD.MM.YYYY HH:mm:ss)  

Same with the Date Format — the original was (D MMM YYYY), I changed it to (DD.MM.YYYY).

When I was in Form-Persons → Add Person and had Cover Picture and Profile Picture enabled, creating a person caused an error when uploading the cover picture. Sometimes the cover didn’t show up at all and the user had to upload it again. At that moment the time shifted by one hour, even if the event was set for the next day. Logically, that shouldn’t happen. On top of that, events in the calendar started repeating endlessly.

I disabled the option and now the user uploads the cover image only after the event is created. After that, new events started showing correctly without the endless repetition.

Now, when I create a new event that starts after the DST change (29.3.2026), it appears on the timeline with a one‑hour shift. Technically it makes sense (after the DST change i think the time really jumps), but I think too this should happen in the background. On the timeline it should always show the time the user originally entered. Right now it’s pretty confusing, so I’ll have to mention it somewhere as a warning or find a way to adjust it.