After starting to modify library functions, I underwent a small interface change that was quite disturbing.
When I click on a row, usually the property manager opens automatically and when I click esc, I go back to Feature manager mode. However, it's impossible to switch automatically, I have to manually switch between the Feature and the Property manager, whether it's the integration of a function or the selection of an object... I admit that it annoys me a little bit...
I looked in the options, I couldn't find anything, anyone will have a miracle solution??
In fact, the option to check / uncheck is located in: Options / System Options / General / Automatically show the Property manager (i.e. at the very first level of options...).
Sorry, I hadn't searched enough... Even if it seems weird to me, I've had the problem for about 1 hour and I haven't touched the system options of the day... Anyway... Problem solved, thanks to the community for your answers!
Please note that this backup file made with the Solidworks tool should only be used on the current version (2014 for example).
When you switch to a later version, it is strongly recommended to re-check all your options manually and to re-save the options of this new installed version.