New answers tagged bug
This thread is quite old but there is a solution for it explained in this forum post: http://www.telerik.com/forums/table-formatting-lost-after-saving-a-list-item Here are the two steps: In order to workaround this issue you can create a custom content filter, which will strip .ExternalClassxxxxxxxxxxxxxxxxxxxxxxxxxxx class. Modify the respective ...
Try to find out, if this is a farm issue, of specific front end server is the "bad guy". Then try to inspect ULS log on this specific server. Maybe users could open the IE console to see if there are any JS errors. Isn't this the time when some kind of job is running? Timer job, SQL backup, anything that can slow down the server response time.
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