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Fix application menu search box missing in GNOME on CentOS 7
1
Edit /usr/share/gnome-shell/modes/classic.json
2
Change "hasOverview": false to "hasOverview": true
3
Restart session
References
https://www.reddit.com/r/gnome/comments/g98weu/centos_7_clean_install_no_search_box_after_yum/
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