Completion no longer shows sensible candidates in `else` branches

On latest master (f4fad03d1410a4b014fd24de4e84f25f98f79879) Completion candidates in the else branches started to be useless, see this short demo:

https://user-images.githubusercontent.com/38700/122011481-7119e400-cdbc-11eb-8e33-7e11f1e55999.mp4

This is in the https://github.com/crate/crate codebase: https://github.com/crate/crate/blob/master/server/src/main/java/io/crate/protocols/postgres/PostgresWireProtocol.java#L645 in case you need something to reproduce. (I haven’t yet tried to see if this happens on smaller projects)

If I checkout the commit before https://github.com/eclipse/eclipse.jdt.ls/commit/9c41c18a2c07e2c1565a83212df2e08d7c407f1d everything is good again.

[snjeza]

I have created https://bugs.eclipse.org/bugs/show_bug.cgi?id=574215

[snjeza]

The following code doesn’t work too:

private void test(String s, int i) {
  if (i > 2) {
  } else {
    s.|
    System.out.println("b");
}