Auto-replace watched words: not working in topic titles / case sensitiveness

  1. Today I noticed that the auto replacement doesn’t work in topic titles.
    Is this intended or a bug?

  2. The replacement doesn’t seem to be case sensitive
    Example: replacement defined OpenBRAND → OpenBrand
    Expected behaviour: openBRAND and openbrand will not be replaced
    Observed behaviour: openBRAND → OpenBrand and openbrand → OpenBrand
    How can the replacement be made case sensitive?