I had this problem but the log entry "!MESSAGE Job found still running after platform shutdown" isn't the error, further up in the log it should say "!ENTRY org.eclipse.core.resources" & "!MESSAGE Unhandled event loop exception" and then a stack trace, the rest is just it shuting down. To fix this I found that deleting all the folders within the ".metadata\.plugins\org.eclipse.core.resources\.history" folder fixes it.
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