Fly is activated when logging in

[Pootouf]

Type of bug

Other unexpected behaviour

/ess dump all output

https://essentialsx.net/dump.html?id=b33652cc6d384f44a636b900bb1cd288

Error log (if applicable)

No response

Bug description

When disconnecting while sneaking on a stair with a block above us, at the reconnection the fly will be activated by default if the player has the right to fly

Steps to reproduce

1. Place a stair on the ground
2. Leave a block of air above the stair and place a block above the air
3. Sneak and go between the stair and the block
4. Disconnect
5. Reconnect

Expected behaviour

The fly should not be activated if the fly was not activated before disconnecting

Actual behaviour

The fly is activated event if the fly was not activated before disconnecting

Additional Information

Example of setup to activate the bug :

[chance-06]

I was having issues where I was seemingly lagging out when cutting down trees (an entity would drop - like sticks, but I wouldn't be able to pick it up and it would just continually fly back up and then drop again. I found out it gets fixed if I log out and log back in) and every time I logged back in I also was set to fly. I was on grass, though, not stairs, and there was nothing above me.