Lightroom Desktop: Guided Upright tool creates guides offset from mouse pointer

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  • Updated 2 months ago
  • (Edited)
When using the Guided Upright tool with a high resolution image, the guide points are created at an offset position from where you click.

Consistently, the guides are created a few pixels to the top-left of where I click.
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Virgil Ierubino

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  • irritated

Posted 3 months ago

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Rikk Flohr, Official Rep

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We will need more information to reproduce and diagnose.

Installed Lightroom version number: (Help>System Info...)
OS version number: 
Monitor Resolution:
Video Driver version number: 
Types of Pointing Devices/Tablets and their Driver version number: 
A screenshot showing the discrepancy would be great as well. 
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Virgil Ierubino

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Lightroom version: 3.2.1 [ 20200403-1047-0e59df2 ] (Apr  3 2020)
NGL Version: 1.14.0.16
Operating system: Windows 10
OS Version: 10.0 [18362]
Application architecture: x64
System architecture: x64
Computer model: Gigabyte Technology Co., Ltd. Z390 AORUS PRO / Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz
Logical processor count: 16
Processor speed: 3.6 GHz
Built-in memory: 32699.2 MB
Real memory available to Lightroom: 32699.2 MB
Real memory used by Lightroom: 2450.5 MB (7.4%)
Virtual memory used by Lightroom: 5438.9 MB
Memory cache size: 1567.2 MB
Internal Camera Raw version: 12.2.1 [ 415 ]
Maximum thread count used by Camera Raw: 9
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 1325MB / 16349MB (8%)
Camera Raw real memory: 1326MB / 32699MB (4%)
System DPI setting: 144 DPI (high DPI mode)
Desktop composition enabled: Yes
Displays: 1) 3840x2160
Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No
Graphics Processor Info: DirectX: NVIDIA GeForce RTX 2060 SUPER (26.21.14.3200) - 8 GB
Graphics Processor Detail: loaded: Yes, supported: Yes, compute: Yes, init: I4_GPU3, hard: success, soft: success, wl: Yes, bl: No
OS Media Capability: true

Pointing Device: regular USB mouse

Video of what's happening, here: https://www.loom.com/share/0ebc07b376fc40af931d14ff198da4a3

It's hard to see, but please take note that I am placing the primary mouse cursor (crosshair) on the exact corners of objects, while the magnified view shows that the guide will be placed to the top-left of this corner.
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Rikk Flohr, Official Rep

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Does the same offset appear with other tools? Whitebalance eye dropper? Target Adjustment tools in HSL?

Do you have any Windows scaling settings enabled?
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Virgil Ierubino

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It doesn't happen with the white balance eyedropper or HSL eyedropper.

Windows scaling is at 150%.
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Rikk Flohr, Official Rep

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If you set Window scaling to 100% or 200@ is it still offset?
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Virgil Ierubino

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Yes, I have tried both; it is offset exactly the same.
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Rikk Flohr, Official Rep

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Thanks for that. Let me see if I can duplicate what you are seeing. 

I am not able to reproduce on my system.  Even at 2:1 it is accurate to the pixel. 
(Edited)