Save All isn't truly a Full Save? Or is it?

Development Getting Started & Setup
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1

Hi, something that’s bugged for awhile now.

Upon doing a “Save-All”, I notice that I’m still prompted to “Save Content” if I immediately, or soon after, close the project.
That is, despite having already saved everything.

Or does it not cover all bases?

I don’t recall if this has been the case always since I’m not working with UE all the time.

Latest instance shows /Script/Engine.World

Any insight?

Thanks.

2

I’ve noticed the material editor has sometimes started doing that if you haven’t compiled it.

3

Thing is, it’s been doing this repeatedly. Without my touching any materials at all.