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This problem has been reported several times but without any solution I am aware. I suggest you to write to ServiceDesk on mql5.com.
Did you report it to ServiceDesk ?
Is it the same with build 613 ?
I'm getting the same issue on build 614, and also reported it to the Service Desk . . . and also got a reply asking for info which I provided . . . my ticket number was #953564
I'm getting the same issue on build 614,