Graph Editor - Box select and transform keys issue #64106

System Information
Operating system: Windows
Graphics card: GTX660ti

Blender Version
Broken: 2.80, b331515d2e, 2019-05-02 17:03

Short description of error
When you select keys using the box select and transform the keys they behave in a strange way. (see the GIFs below)
Seems like the key handles are not affected by the selection.

In general I think the key/point should be treated as the parent of its handles. And when the key is moved the handles should follow it, no matter if they are selected or not.

If you select a key by just clicking on it it works as expected.

Exact steps for others to reproduce the error

Create a few keys for an object in the Graph Editor.
Box select a key and move it.

Blender:

Maya:

After Effects

Inkscape:

Added subscriber: @Oskar3d

Added subscriber: @WilliamReynish

I can confirm this, but it is partially my fault in the Industry Compatible Keymap, which I know you are using. I have the operator set to

 "include_handles", True

If I set to

 "include_handles", False

It also selects the handles automatically, and they will move correctly.

However, I still think this is a bug, but something we can work around in the keymap.

I fixed the keymap, but will leave this ticket as confirmed, because I think this is still a bug, albeit an obscure one since the default keymaps work around it.

Added subscriber: @ideasman42

@ideasman42: feel free to re-assign if this is not for you.

Note: to reproduce the issue, you must change the keymap so box select in the graph editor is set to include handles = true.

Added subscriber: @JulianEisel

Closing for the same reason as #70459: Stricktly speaking, it's not a bug, but a design issue. We're trying to address this with #70634.
But thanks nevertheless, helps justifying the changes :)

Changed status from 'Open' to: 'Archived'

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Graph Editor - Box select and transform keys issue #64106