I've noticed this since the installation of the version 36.1:
In an album's settings, if I set a custom date format (in the "Advanced" tab), for example "d/MM/y HH:mm" instead of "dd/MM/y HH:mm", the modification indicator appears in white in the lower left corner, and if I click on it, the Changes window appears, with the detail shown in the Before.jpg capture, that's good!
However,
without building the project, as soon as I switch to another project, saving the changes of the initial project, and I return to this one, the Changes window shows something different, cf. the After.jpg capture. It seems that the date format change is described twice
Then, I build the project, and the Changes indicator remains in place. The Changes windows always shows the dateFormatAsObject parameter as modified
And from this point, it seems impossible to get rid of this modification: dateFormatAsObject.