Dear Josh, I’m using Version 18.104.22.168.P. I could set featured image in Firefox, this happened in Chrome only. I do not think it’s memory issue now. I could not search the mentioned memory gauge plugin.
This was what host replied, it is too general to no where:
“Chrome is a very light version of web browser with less features, hence it is normally faster compared to other web browsers. However, it may not be able to support some scripts for the same reason.”