I Cant place thinga, Is this a known bug or just my mouse pad?
it appears to be an issue that only happens in the browser version and only in some areas (like the Toxic Desert) and it actually breaks a lot more things than just placing blocks,
unfortunately I wont be able to fix it for a while as it might require some serious optimizations or even a separate cut down version for browser.
Until I'm able to figure it out some areas will be unplayable, I'm very sorry for this annoyance.