I dont know if its already known but there seams to bo an issue with drawing channel lines on renko charts.
The channel line is constructed with two lines. First line is defined by two points (lets call it line A). Second line (lets call it line B) is defined by one point only and angle of line A.
Line B is getting displaced when renko chart is zommed in. When chart is scrolled left/right line B travels up and down (the distance betweed lines A and B is changing)

Simmilar issue is with Fibo Fan Lines - they arent properly drawn in zommed in renko chart.

I hope description is understandable.

Indeed we confirm this problem exists on the Renko and range bar charts. We will think of any possible solution.
In a meanwhile, please use the channel so that all the 3 points stay visible on the chart (zoom out if needed). It wil lbe drawn correctly then. As soon as one of the points becomes unvisible, the angle problems are possible.