Vertical rainbow lines not updating properly in "MultiLineOnly" mode

[miitors-tbm]

How to reproduce

1. Enable rainbow lines and set the mode to "MultiLineOnly".
2. Set the cursor such that a vertical rainbow line appears at the current multi-line nesting level.
3. Move the cursor to between two same-line braces inside a different multi-line "scope" (e.g. moving from one method definition to another).

Expected behavior

The vertical rainbow line should update to match the current multi-line scope.

Observed behavior

The vertical rainbow line stays in the previous position until the cursor is placed somewhere at the "root" of the new multi-line scope.

Example

Running Visual Studio 2022 version 17.4.3 with Viasfora version 4.4.212.