ID 416681 - Vertex Slide sometimes fails to merge vertices.

Problem summary
Vertex Slide sometimes fails to merge vertices.

Customer reported version
modo.13.2v1

Customer reported platform
10.15

Steps to reproduce

1) Open Modo and create a cube at the origin of the scene.
2) Select the top polygon and scale it by 50%.
3) Select the top front edge of the cube and Bevel it by 200mm.

4) Now select the top-left vertex of the bevel and select Vertex Slide apply the settings shown below:

5) Slide the handle all the way to the right.

6) Use the lasso selection to select the last vertex. Notice that sometimes this will be two vertices instead of one.

Expected behaviour
The vertices should be merged.

Actual behaviour
Sometimes the vertices aren't being merged.

Workaround
Unknown.

Reproduced by support

This bug has been reproduced in:

13.2v1 - Windows 10, OSX 10.13, Centos 7

13.1v1 - Windows 10

13.0v1 - Windows 10

12.2v2 - Windows 10

12.1v2 - Windows 10

12.0v1 - Windows 10, OSX 10.13, Centos 7

Earliest version tested

12.0v1 - This feature did not exist before this version.