Lost game on time AFTER making a move!

Why did I lose my game on time after I made my move with over one minute on the clock, the end position was reported as if I never made my move, but any attempt to make a move in the position just registered as a premove...

Adding a image as proof of time left, taken when I noticed that my time was still running...

imgur.com/a/UxFyV

Edit link to the game:
en.lichess.org/umEQhmKU9Jtb

Maybe you lost connection at the end of the game?
It happened to me too.

Just irritating on a bad day as a whole, especially with as large increment as 15 seconds...

Ironically, the image doesn't prove anything because it doesn't show a move you made as a premove.