this is caused by the home buffer loading build-in
org which conflicts with elpa org.
We actually want to use elpa org exclusively so we have
to make sure to redraw the spacemacs buffer only
after we have finished loading the layers.
In addition latest org version 9.6 and the behaviour
on emacs 29 has also changed so that org is autoloaded
much earlier than before. This is what actually did
make this bug show up.
However this behaviour was in place since a long time
and could be the cause for a lot of unreproducible
bugs as the actual conflicts are dependent on the
distribution specific emacs version.
Known issues:
This is a hotfix it solves the original issue but
introduces a new, hopefully less dangerous issue,
this is for now the start buffer is not configurable.
I will add a follow up PR to remove this issue however
I think this is far less annoying than a set of random
conflicts caused by loading elisp files from different org
sources.