Problems with endfloat package

Not sure it's documented (didn't look:-) but due to the way the package scans for the environment

\end{table}

needs to be on its own at the start of the line so delete the spaces before it in your example.

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This is documented in the endfloat manual

10.1 Literal strings

When floats are being read, LATEX is in verbatim mode. Among other things, this means that the lines like

\end{figure}

must appear on lines by themselves without any whitespace before or after them. A complete reimplementation of the most difficult part of the package is required to fix this limitation, but it is among the distant goals I have.