Make the page tree remember its last position
Make the TYPO3 page tree remember its last position
The feature that the page tree memorizes its last position and open page was removed in TYPO3 8 (maybe not intentionally).
Currently only tested with TYPO3 8.7 LTS.
Add the github repository in your composer.json and require the package:
composer require wazum/pagetree-memorable
(Currently only available on github)