KiCad

[4.0.7][OpenGL canvas] Inconsistent “footprint” listing in “clarify selection”

Bug #1723469 reported by Michal on 2017-10-13

This bug affects 3 people

Affects		Status	Importance	Assigned to	Milestone
	KiCad	Fix Released	Undecided	Unassigned

Bug Description

When operating in OpenGL canvas, it is sometimes hard to edit footprint properties.
I have to find a footprint area free of tracks/texts/etc and press E to edit footprint properties.
If I press E while the cursor is hovering over other objects (tracks, references, values, etc) I get the "clarify selection" menu which is missing the Footprint item (hence can't edit Footprint properties in busy areas).
The issue is not straightforward, it is related to footprint PAD sizes, and their spacing.

I've tried with a simple 2-pad SMD component, square pads. Pads 1.5x1.5mm, 3mm between centres: footprint appears on the "clarify" list.
The same pads, but now 4mm between centres: footprint does not appear on the "clarify" list. The same spacing (4mm) between centres, but pads 1.0x1.0mm: footprint not listed on the "clarify selection" list.

In standard canvas, everything works OK (I get "footprint" on the list so I can easily get there).

Problem noticed on 4.0.7 release, but also confirmed by other user on Version 2017-09-09 revision 8c7175b00.

I've attached example footprints to demonstrate the bug.
The "0603_XXXY.kicad_mod" is the bigger footprint which doesn't appear consistently on the "Clarify selection" list upon pressing E key on its center.