More often than not, when I start the game, regardless of which mode I choose, I see this:

Big Screenshot

I can still toggle the sound or reset the game. Clicking the on the dirt boxes to start often doesn't work, no matter which ones I click. Sometimes, the game seems to start still whenever it wants to. In this case, the block disappears and the screen begins to scroll, but the character will sit at the top without moving to the block I clicked on to get the game going. Sometimes I die right away because I didn't notice that the game actually decided to start. When it does start, the start menu in the back disappears, and assuming I don't die, the game is otherwise normal.

Sometimes, the game starts normally and I don't see the starting menu at all.

I'm using Windows 10, and Firefox 67.0.0 (yeah, a whole version behind.

I'm having some of the same issues. Mainly with the game not always starting. Friday I managed it get all the way trough to the golden chest in the end, but I got no reward when I clicked it. ( Got a screenshot but dunno where I can upload the photo to to get a code to be able to sare it here )

I'm using Chrome vers. 76.0.3809.132

It's lagging at the start (a click and then takes a few seconds for the game to actual begin to scroll down) but I don't need to do hard refreshes anymore.