Blueprints that create instanced static meshes don't always get baked lighting
This is a pretty frustrating bug, as it is quite temperamental.
Basically if you create a blueprint in your scene that adds an instanced static mesh component, then add a bunch of instances to that and bake the lighting, the instances don't get lighting baked to them.
A temporary work around for this is to click
Secondly, sometimes after a successful light build, closing and reopening UE4 causes the instances to lose their baked lighting as well.
Unfortunately this makes using blueprints and instances to layout scenes quite buggy.
Any help in this regard would be great. :) Richard
asked Jul 11 '16 at 09:08 AM in Bug Reports
Do you have any repro steps that can cause this to happen consistently and a setup for your BP instances?
When I test this with a BP that has 9 instances setup, with their mobility set to Static I'm not seeing any issue at all on my end. I've reloaded the level, I have multiple copies of the BP in the level with multiple stationary lights and I'm not seeing any issue.
You may need to include more information and steps for me to reproduce on my end.
answered Jul 13 '16 at 03:18 PM
Tim Hobson ♦♦ STAFF
I been having the same issue that instanced static meshes are not baked in 4.12.5. Pressing "Build Lighting Only" has been a work-around for me. Pressing "Build" will reintroduce the issue.
Haven't tested in 4.13 yet.
answered Sep 06 '16 at 06:35 AM
I have a blueprint that constructs a "Add Static Mesh Component" with mobility set to Static. When going into Lightmap Density view, the mesh was appearing the tan color which I believe means no lightmap or moveable. Well my blueprint has a "Scene Component" as the root. When I set the mobility to to "Static" on the "Scene Component", the static mesh the gets constructed is now showing as a lightmap color with the checker. So if you have a scene component as the root, try changing the mobility to static. This worked for me, the lights bake correctly on the mesh. (Note: I'm using 4.13.1 release from source)
answered Oct 02 '16 at 10:46 PM
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