I am running Windows 11 x64.
Specs:
Microsoft Windows Version 24H2 (OS Build 26100.4061).
Intel Core i9 9900K @ 3.60GHz; 32GB RAM
NVIDIA GeForce RTX 3080
Scenario 1:
The Tab Style is set to "Rounded".
✔ Keep groups lined up when moving
✔ Keep groups spaced 3 pixels apart when moving
✔ Keep groups sized to even multiples of icons (lxl, 2x2, 3x2, etc) when resizing
Why are the Fences without tabs unable to snap in line with the Fences that are grouped with tabs.
For example the Height of the ungrouped Fence marked 7 is few pixels shorter than the two grouped Fences next to it 6 or 8. This happens even though the bottom base line of all three Fences are in perfect alignment with each other.
If I try to resize the ungrouped Fence 7 without disabling snapping, the #7 attempts to jump to a larger height than the Fences next to it. For example the Fence 7 height is 2x but if I try to make it taller, with snapping enabled the Fence snaps directly to 2.3x which is too tall.

https://i.imgur.com/pjEWwTR.png
Scenario 2:
The Tab Style is set to "Rounded".
✔ Keep groups lined up when moving
✔ Keep groups spaced 3 pixels apart when moving
✔ Keep groups sized to even multiples of icons (lxl, 2x2, 3x2, etc) when resizing
Imagine this, "Fence A" has 2 normal Fence tabs (no folder portals) and is sitting above Fence B. Both Fences want to be the exact same length and width.
"Fence B" has 3 tabs, one of those tabs is a folder portal the other two are normal Fence tabs.
When I have the folder portal tab selected on Fence B the size "6x" appears larger than the size "7x" on Fence A I can not get Fence A to snap to size with Fence B nor will Fence B snap to size with Fence A.
If I select a different tab and the folder tab is not open. I can then resize Fence B to the size of Fence A. By switching tabs and resizing Fence B to the exact same size as Fence A the measurement now shows 7x for both Fences.
This doesn't seem right since initially the "folder portal tab selected on Fence B the size "6x" appears larger than the size "7x" on Fence A I can not get Fence A to snap to size with Fence B nor will Fence B".
Fence A at 7x: https://i.imgur.com/1nK4XWU.png

Fence B at 8x while on the Downloads Folder Portal Tab: https://i.imgur.com/UockUOf.png

Fence B at 7x while on the Photos Regular Fences Tab: https://i.imgur.com/RXodlQF.png

Any idea how to fix these things? Is this a bug?
One last question what does checking the box "Keep groups lined up when moving" really even do? I can't tell the difference in the behavior of Fences when unchecked vs checked.