In past versions of Sketchup, I liked to gimble around my model by pressing and holding the third mouse button/wheel. It occasionally lets me do it now, but mostly, no. It’s a new mouse with updated software, so that isn’t the issue, and the old mouse was inconsistent too.
The only thing I can do with the third button/wheel now is zoom in/out.
On a side note, I hate having to turn off the edge style>profile on each and every new model I start. Who the ^%$# needs “profile”??? This is a final output option that does little to do with the initial startup model, and if anything makes identifying visual line cues harder. Now, because some johnny come lately says “oh, hey. I like this feature, so it should be turned on all the time!” you decided to turn it on for EVERYONE???
PLEASE stop fixing what isn’t broken!