:Make sometimes forgets the commandline

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The behaviour is inconsistent, but usually when I call :Make [arguments], the
subsequent calls to :Make will pass these arguments.
Sometimes, the arguments get forgotten, and :Make just runs &compilerprg.
Sometimes, running :Make [args1] then :Make [args2] actually runs :Make [args1] [args2].
I can handle this inconsistency by manually resetting :compiler, but it keeps slowing me down.