Here's what sucks for me:
Ignoring both locale and Country in settings and displaying a language based on my IP address.
Half the screen (above the fold) when signed in is "Go Premium. Be happy.", and I had to search "Open the web player" down there, but I understand.
"Open the Web player", but the route is "/browse", but I understand.
The controls of the player are horrible on the "web player". I have to point and click. How to make it full-screen? "F"? Nope. But there is a key for full-screen, right? Nope. Forward is right-key? Nope. The keyboard shortcuts here do not work: https://support.spotify.com/us/article/keyboard-shortcuts
There are two columns, one for Mac and one for Windows. How about a column for just a keyboard and letting me worry about the OS. I have Ubuntu. On Windows, "Alt-right" supposedly corresponds to "Alt-Right". If I hit "Alt-Right" on Ubuntu, it goes to the first episode of the podcast.
I have one. If I try Cmd-Alt-Right to make it go forward, it goes to the first episode of the podcast. If I hit it again, it goes to the second. If I hit "Alt-Left", it goes back one episode. This is the behavior of "Next track" and "Previous track" but it's improper. When I am on the last episode and hit "Alt-left", it doesn't go to the penultimate episode, it goes to the episode's start. Same when on the first episode: if I hit Alt-left, it doesn't go to the last episode. There's no consistency.
There's no indication of time when you hover the mouse cursor on the slider. Say you're at a timestamp and want to go to another timestamp: a normal way to do it would be to hover over the slider and have the timestamp corresponding to your cursor's position appear, and then you slide to the right or the left, click right on the desired "timestamp".
Can't do that. No timestamp shown. To go to a timestamp, the best attempt is to click on the dot on the time slider, hold down, and then move it to the desired timestamp... But you can't even do that properly, as the resolution is about 17 seconds per slighest move/pixel or something. Meaning you cannot hit a specific timestamp.
The dot on the time slider is fat as hell. If you're at 2:25 and hit pause. Clicking on the right part of the dot (i.e: the intersection between the slider and the circle at angle 0 rad) will bring you to 4:26, more than 2 minutes on multi-hour long podcast episode. I don't know how it scales down for a song track.
In other words, the radius of the dot on the time slider corresponds to 4 minutes.
I struggled for several minutes to make the player appear once. I don't know how it is reduced/docked and clicking on one episode but it didn't appear on the screen. Worse, another episode was displayed or something.
I just dread using the product/interface. I just put the thing on and then don't interact with it because I can't control it (except Space for pause/play). If I interact with it I know I will only hate it and I don't want to.