Bug reported and confirmed by ServiceDesk :
Is OnChartEvent() actually called during a "Stratagy Tester - Visual Testing" mode session?
Win 10 latest build, MT5 V5 build 1966, UHD 4K screen
Tester (EA) in Visual Mode breaks synchronisation between Candles and horizontal time scale on chart, when changing resolution (magnifier +/-). Screen shot attached. 0900h candle shows on scale at 0745h.
Reported in parallel to Service Desk, now.