Hey @nadine-rasu ,
So the first thing i would check is the definition of the rows height and check that they can grow/shrink according to content. there is a chance that they have Height (e.g. Height=400px, Height=20VH etc…).
if that is the case, i would suggest to set the row height definition with minmax same as grid defaults: Min=PX, Max=MaxContent.
Hope it helps 
Yanay