After upgrading from 2.0.1x to 2.0.17 I can not log in properly. Entering correct login data for any account redirects to log in page instead of start page (no wrong-password-message). I can use the forgotten-password-routine as workaround, and log files confirm that former log in had been successful. Some users experienced this problem in the past and could solve that by deleting cookies. This does not help in my case, I double-checked that with different browsers. What else could be the problem? May an SSD cache in my Synology NAS be a hint?
A remark: Any URL has doubleslash within - is this okay? (example: myhomepage.com/webtrees//index.php?route=%2Fwebtrees%2F%2Ftree%2FStammbaum%2Fmy-page)