Does android studio builds the project twice when using

Preview

? It looks like sometimes I get an error saying the jar is being used by another process and the build for my emulator succeeds but the build for

Preview

fails.

In my experience, the preview doesn't work most of the time. In my opinion, for now just don't rely on it too much.

Yeah but it's kinda misleading when the build fails. I almost spent an hour figuring out why the build was failing but then I found out it was building twice and the preview one was failing