I’ve meant to get this documented, since it showed up on upgrading to 2.4, and repeated exactly on upgrade to 2.5. I presume it’s still there for 2.5.1.
There has been a force-behaviour workaround, but I went further when upgrading to 2.5 a few weeks ago, and tied down what’s causing it, which allows a much better way to go for those who have the problem.
The bug report is here, and contains both solutions.
Regards.
Clive