This is called being lucky... The usual crowd of pedestrians and cyclists can be seen in the photo. And there are many more than trams...

Hm... What speed do the trams reach usually here? The bike path seems to be too close to the tram tracks, and it doesn't look so safe for the tram to drive along the crowds of cyclists. What if a cyclist suddenly comes out in front of a moving tram? A cyclist could lose his coordination for a while because of his head gets dizzy or kind of and then fall onto the track under a moving tram. It looks a little strange that there isn't a fence or a kind of a guardrail.

Хм... Какую скорость здесь обычно развивают трамваи? Велодорожка, кажется, находится слишком близко к путям, и проезд трамвая вдоль толп велосипедистов как-то не выглядит безопасно. А что, если велосипедист внезапно выскочит перед едущим трамваем? Велосипедист может на секунду потерять координацию из-за закружившейся головы, например, и упасть на пути под едущий трамвай. Странно, что тут нет никакого ни забора, ни отбойника.

The available space is what it is. Between the tram tracks and the cycle track is a safety space.
This neighbourhood became very popular only after the reconstruction. Until a few years ago, there was neither a bicycle lane nor a tram line here.
Cycling within the city has also gained enormous popularity, also thanks to these bicycle lanes.
Now they are indeed considered as too narrow, also due to the many types of bicycles that exist nowadays. 10 years ago, when the plans were drawn up, this could not have been predicted.
Trams in Belgium fall outside the traffic regulations and therefore only have their internal regulations. There is no official speed limit.

Yes, I waited for the tram for 20 minutes and then they went two in a row. Even though I knew there were a lot of people (there was an event in town) and cyclists. I tried it and it worked.