I have this Problem where the intraday 1 min chart is missing some data when i switch back from a larger time frame. The candlesticks only look decent when the chart was open for a while. I have screenshot where you can see the difference.
The second picture shows how the chart is supposed to look like. The chart was opened right after market open. The candles load properly, but the first picture is missing some data it seems like bcause it was opened a bit later.