I’m on Ubuntu Linux 16.04, this happens both in Firefox 49 and Chrome Version 53.0.2785.116 (64-bit). I could do all of this earlier this week, so it seems like a regression.
- select the rectangle tool
- click to start the rectangle
- try to enter 14",48" (I’m doing tutorial number 4 from http://www.sketchup.com/learn/videos/58?playlist=58)
- the moment I enter the ‘,’ things seem to go wrong, I cannot continue to enter 48".
Other than that: I’m entirely new to sketchup, having it running on Linux and using it for the first time blows me away, it’s great!