Am 24.01.2024 um 21:17 schrieb Allin Cottrell:
 On Mon, 22 Jan 2024, Sven Schreiber wrote:
> I've stumbled over a certain behavior with panel data handling, which 
> could perhaps be a bug.
 Yes, there was a bug. After going over all that Sven reported I was 
 able to replicate the problem with these steps:
 ...
 then I got the correct result with the --dummy option. So it seemed 
 the error must lie with the shrinkage of the original T=24 dataset at 
 a result of step 4) above. Indeed, some "debris" was not being cleared 
 out. That's now fixed in git.
 
Wow, that's very nice bug-hunting ! - I didn't really expect it to be 
reproducible
thanks, Allin
-Sven