the chart you show us is a logarithmic chart and the big bars at the bottom are responsible for the volume from 3k to 14k (dump by 70% and pump by 400%), while the current bars are responsible for the price movement from 22k to 24k (pump 10%).
This may be incorrect. I've verified myself that the scale being logarithmic or regular does not influence the number of bars displayed in the POC indicator, therefore every bar displays the same range of price.
For what regards the possibility that the relative condition of the exchange used for charting may influence the BTC graph, thanks for the tip, very logical and informative. I confirm that the whole issue depends mainly on this.
Sometimes one may miss simple things and needs to be set back in track by others, like you did with me.