Thanks but it still doesn't work.
It was working until I updated to CC 2018 now it doesn't work version 22
I have the same problem since last updated the software the space bar shortcut doesn't work in Ai, Ps and Id but in Xd it works. I have MacOs High Sierra. I haven't found any suggestion that would work.
It works now. I think they fixed it in the update or could have been that I updated my OS X. I'm on Sierra
Not really a fix, but I was having the same problem after I updated (I'm on a Mac). Resetting prefs didn't work. Mine started working again when I quit Safari and Chrome whilst Illustrator was open. Which makes me think it's related browsers using the space bar for page down – which other people have mentioned.
Thank you! I have been reading pages of related problems, and nothing I tried worked. Your "not a fix" fix worked!
Thank you so much for this advice! Been having this bug for years, here I am, in 2020, and still not patched by Adobe. I thought a subscription model was supposed to speed up patches like these but guess not.
For anyone searching for a fix for this bug on Mac os High Sierra 10.13.4.
Usually this starts when you open Safari first than Illustrator, in the moment it stop working, just fully close your safari browser (cmd+Q) and the space bar in illustrator will start working again. If you open safari again it shouldn't be bugging any more.
It would be nice os Adobe check up on this little bug... It’s kinda annoying.
Thanks for this. I had the same problem and closing Safari fixed it. I'm surprised that Adobe hasn't fixed it yet.
Thanks so much! Its working now!