The empty line and the two disadvantages of https://github.com/geany/geany/issues/3271#issuecomment-1236386886 occur **ONLY** if an other tab with a txt-document is right away in focus after a restart of Geany. In other words: If the tab of the corresponding txt-document is right away in focus after a restart of Geany, then there is no issue. Because of that, I think that not Scientilla is the problem, but Geany, but maybe I'm wrong.
What do you think about that?