Bug in not stacked charts : too many lines

Hello ! I'm on V.49.10 and I have a new problem in a line chart that popped up last month.
I have a value in time that is grouped by a categorial field "Réseau".

Normally, if I filter on 2 specific "Réseau", I should have 2 lines.
It is the case when I "stack" the lines, but now when I chose not to stack them, I have 4 lines... Why is that ? Was not the case before. It seems like that the 2 Réseau are duplicated AND stacked...


can you upgrade to v50.25 and see if this is fixed there?

Yes it worked ! Thanks
But now friday is linked to monday, I don't have "blanks" anymore. Less important than the pb before though =)