Baseline sales disappearing after a couple of periods

[TomasPapantos]

Hi!

I've used the plot_media_baseline_contribution_area_plot function and I can see un a timeline how each marketing channel and baseline contribute to overall sales, but at some point in time baselin completely disappears.
As I've implemented this model for multiple datasets I know that the function works well and is only in a few cases in which baseline sales disappears.

So my question is: why is baseline disappearing?
Are there particularities that a dataset might have that causes this?
Am I doing something wrong for those few cases with disappearing baseline sales?

If someone came up with this matter, is this something to solve or to accept? If it's something to be solved, how did you solve it?

Thanks!
Tom