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Date/Time: Tue, 06 Oct 2026 10:47:47 +0000



Time/X axis dragging not working correctly, perspective changing- after update

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[2026-08-21 20:39:48]
User240337 - Posts: 23
For context- I manually will adjust my x and y axis scale on all my charts and then set/check the following settings by clicking on the Y axis to set my ideal perspective:
1) Interactive Scale Move
2) Set X & Y Constant Relationship
3) Scale Range: Constant Range

With these settings, I've always been able to left click (and hold) the X time axis- and then drag my mouse left or right to either "zooom in" or "zoom out" while keeping my constant perspective on that chart. Eventually always returning to the original position I moved it from.

Following the fast update I ran a few days ago- the clicking and dragging of the X axis does not produce the same results the previous versions.

Using a TPO chart for example:
I like my TPO bars narrow width and close together on the X axis, and long/taller on the Y. I will lock in my settings as listed above by right clicking on the Y axis.

If I left click and drag the X axis to the right (the goal to zoom out)- the graphics seem to jump/skip twice. This is difficult to explain because I do not have vocabulary to describe it, but I will do my best.

When I drag the X axis slowly to the right with the goal of zooming out 1 frame/optic (not sure how else to explain it)- I see the TPO chart graphic jump once to the correct new smaller size, but quickly jump again and shift to a new position. If I try and drag the X axis the left in an effort to return the TPO graphic to its original position- the graphic will jump twice- once briefly to the original desired starting location and then followed by a new shifted location, usually wider width. It is impossible to return the graphic to its original starting location. If I drag the X-axis left and right- I can see the TPO chart jump to the original starting location before it jerks/snaps to new shifted location. I have manually checked this by placing edges of actual sticky notes on my monitor screen on the edges of the TPO graphics- and I can see the graphic shifting/jumping in and out of the original location when dragging across the X-axis- never being able to actually return it/stop it in the original starting location.

In general, the scrolling/dragging the X-axis is not smooth as previous versions. The dragging of the x-axis with my settings makes all charts jumpy and jerky, inconsistently tracking the dragging of the X-axis. It is like the chart graphics are "snapping" back and forth to the previous/next "frame/optic" and changing the perspective.

I've done my best to explain this, please let me know how I can help however I can. This current issue is a big headache on my end as I am always zooming in and out with the X-axis by clicking and dragging. Previous versions worked just fine.

Thank you
[2026-08-21 20:50:25]
John - SC Support - Posts: 48114
We have had a couple other reports that there is something not working correctly with the "X & Y Constant Relationship" in recent releases. This is being looked into.
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[2026-08-23 00:07:10]
Sierra_Chart Engineering - Posts: 25070
This will be resolved in the next release. It was rather complex. It would not surprise us, if there were issues in the past. Which will be resolved in the next release coming out now.

It is a subtle problem, involving the precision between four byte and eight point floating-point values. As we convert to 8 byte floating-point values in the program, there was a very slight comparison problem that was getting significantly magnified, when there was a calculation of the number of bars needed in the current view based on this type of scaling and the changes to it. Effectively there was no change in the number of bars but a different spacing was getting applied. Sometimes bar spacing can change, but does not change the number of the bars in the chart. Now the number of bars in the chart actually has to be determined to be changed, with this type of scaling before a new calculation for bar spacing is applied.
Sierra Chart Support - Engineering Level

Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy:
https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation

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