@MatthiasKlug @Dimitrios-Kanellopoulos
Based on my finding with Spartan Sport wrist hr baro, v 2.8.24, if you have auto laps ON, manual laps are not displayed in watch.
When you switch auto laps OFF, then you are able to see the manual laps on watch.
In both cases, even when you have auto laps ON and manual laps are not visible on watch, the manual laps are correctly shown on Suunto App. I think this sounds like bug or at least strange working feature. Ultimately it would be great if you have separate fields (in sport mode customization) for auto and manual laps.