I'm very new to Blender and I'm having an issue in using invert select.
First, I selected these vertices:
Then, I used Select> Invert:
But instead of selecting only those vertices that were not selected, everything was selected:
How can I fix this?
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$\begingroup$ Unfortunately, invert selection has some strange results, and always seems to wortk best for me using faces only. For this - I would select the whole loop of vertices, and de-select every other using "checker deselect". If you need the opposite vertices selected after that, change the offset by 1. $\endgroup$– Christopher BennettCommented Jun 2, 2020 at 13:28
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$\begingroup$ It may just look as if all the vertices are not selected .. have look at the selected vertex count in the information strip under the main window: 'x / y vertices' .. check that x = y. $\endgroup$– Robin Betts ♦Commented Jun 2, 2020 at 17:24
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$\begingroup$ @ChristopherBennett, I cannot replicate any issues. This may be a hardware or driver glitch that may be fixed by some settings in the Preferences or driver update or something or maybe it's a bug for some reason effecting only some users or another issue in the specific model. I don't think this is a universal experience for everyone. Invert selection works for me on 2 different PCs flawlessly all the time for a very long time with many different Blender versions. I have never had any issues with it working with Blender 8 hours a day... $\endgroup$– Martynas ŽiemysCommented Jun 2, 2020 at 22:08
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1 Answer
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You might have double vertices. What might have happened is that the vertices that were selected were double ones, so inverting the selection also selected the vertices that were being overlapped by them. This would give the illusion that all vertices are selected.
To remove double vertices, in Edit Mode go to Mesh > Clean Up > Merge By Distance. Any detected double vertices will be removed and a message will show up saying how many double vertices were detected and removed. If no double vertices were removed. this might be a bug.
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$\begingroup$ Najim's answer above worked for me. I was actually selecting a face and going ctrl - I to then assign a material. The material kept assigning to the whole object. Doing this mesh fix solved it for me. The ctrl-I correctly clicked only the other faces. $\endgroup$ Commented Aug 27, 2022 at 11:18