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Why do candlesticks appear flat what I've selected from rangefinder?

So my candles look fine and are elongated vertically in default settings which allow the user to kind of differentiate easily between the various prices.

But when they select a group of candles by select with the <-|-> cursor, they look like they’ve been squished.

What do I do to keep the proportions when a user has selected candles to look at?