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2.75a - loop select bug
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System Information
Win 7 64 bit
Geforce GTX 960

Blender Version
Broken: 2.75a
Worked: 2.74

Selecting doubled up loop (same vertex positions) fails

create a cube (or just use the default one)
go to Edit Mode
set to Edge Loops charing the exact same position (e.g. split one loop by hitting "V", or shift the second loop to the exact same position of the first one)
try to select each loop seperatly (in 2.74 and before this works by Alt + Shift + RMB)

For me it does not work no more in 2.75a. Only one of booth loops can be selected.

Greetings Martin

Event Timeline

martin me (martinme) set Type to Bug.
martin me (martinme) created this task.
martin me (martinme) raised the priority of this task from to Needs Triage by Developer.
Bastien Montagne (mont29) triaged this task as Needs Information from User priority.

Not sure what you are talking about exactly, please always attach a .blend file to help reproducing the issue.

martin me (martinme) added a comment.EditedJul 19 2015, 1:00 AM

Sorry, there was some misspelling in my first post that possible makes it hard to understand.

I meant, cut an edge loop (CTRL+ R) into the cube and split it by using "V", this should be the easiest way to go.
The result is: you got two edge loops at the same position. For the missbehavior of the "Loop Selecting" it
doesn't matter either the loops are splitted or not.
Then try to select each of this two edge loops for itself by using ALT+RMB and ALT+SHIFT+RMB.

By using the ALT+RMB / ALT+SHIFT+RMB shorts for selecting loops, I can select one of them edge loops, but not the other one.
The "other" edge loop can't be selected at all.

In previous versions this was still possible.
In 2.74 and before:
By using ALT+RMB, you could either toggle the selection (one or the other), or you could select
one loop plus the next you rightclick on / minus the next you rightklick on, depending on the loop your klicking on was already selected or not.

The operation is surely possible in 2.73a.

Bastien Montagne (mont29) raised the priority of this task from Needs Information from User to Confirmed, Medium.Jul 19 2015, 10:37 AM

OK, can confirm that we cannot switch selection between loops that way anymore, not even in wireframe mode (which was working in 2.74 and before)…

In solid mode, this seems to be broken since much more time (if it ever worked), at least in 2.74 and 2.73a it’s not working either.

martin me (martinme) added a comment.EditedJul 20 2015, 5:08 AM

With "limit selection to visible" OFF, this also works in "solid view mode", in 2.74 and before.
I usually have this "limited view and selection mode" OFF (since this often gives weird results when selecting, depending on the angle of view and view distance).
So I can't tell how it works with "limit selection to visible" ON in older versions.
I wasn't aware by now that this affects the loop select function too.