Thanks for the information provided to the Illustrator team.
We are able to reproduce this issue at our end and the engineering team is currently isolating this issue further to get to the root cause.
With Best Regards,
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this is a MAJOR inconvenience ... I've been using the space bar as a quick way to move around, for over 10 years .... UNACCEPTABLE !!!! ... it decreases my work productivity by at least 25%
ADOBE: this is major major issue ... pls fix ASAP !!!!