[BUG REPORT] Tumblr Rift Connect credentials are not saved

Summary: Tumblr posting under RIFT CONNECT works for only one session
Details:
Tumblr won't stay logged in in the Rift Connect feature. I am checking "Keep Me Logged In":

https://i.imgur.com/w053j7r.png

I am using Windows 7 and I run Glyph as admin.
After I sign in to Tumblr ingame, with the game still running, I can see a "Tumblr" key under [Credentials_<my email>] In C:\Users\<Me>\AppData\Roaming\RIFT\riftconnect.cfg . And automatic posting does work.
When I log out of the character: the Tumblr key is still there
When I exit the game: the Tumblr key is still there
When I relaunch RIFT (not Glyph): riftconnect.cfg is modified and my Tumblr credentials are discarded!

Time: Has been broken for a long time for me. Based on my tumblr, it looks to have stopped working for me on Oct 8, 2015. Reconfirmed today.

Expected behavior: I log in to Tumblr in Rift Connect once per computer... ever.

This is still bugged. Restarting the game logs me out of Tumblr.

Posting pics to tumblr upon an achievement does work, but I don't want to to log in every session.