Today's (June 27, 2023) version fixes the following errors / adds things:

Fix: Items that sometimes could be circled, but not picked up.
Fix: Empty thought bubble on the pedestrian bridge
Fix: Player now always can use both WASD and the arrow keys
New: Added an extra inventory hint (that you can drag and drop items onto NPCs)

And someone in the comments asked me about the save functionality! You can save here, where the cat by the lake is: