Box clipping
There are two flaws about the box clipping: If I store box clipping options in a .opt file, they are not applied when merging that options file. I think this could be related with the second bug: Click on the box tab in the clipping dialog, set some values, click on planes, click on box: values are reset to default, but the fields of the box tab should keep their values. This bug is quite old now (I know it about 1 year) and is still present in 2.5.0.
Keep up the good work, I like Gmsh very much ;) And thanks for fixing.