@Adonis Papaderos
When testing for the related (or same) Bug #665316 “crash when saving after changing stroke width (no focus-out-event)” [1] with older revisions, it turned out that the bug was introduced between r8854 and r8865 (of inkscape trunk). I haven't repeated those tests with the 'steps to reproduce' in this report (bug #669537), but can do to confirm the regression if needed.
Maybe this helps for finding / evaluating a solution. Possibly the regression was introduced by the new code for the connector tool that was merged at that time.
@Adonis Papaderos
When testing for the related (or same) Bug #665316 “crash when saving after changing stroke width (no focus-out-event)” [1] with older revisions, it turned out that the bug was introduced between r8854 and r8865 (of inkscape trunk). I haven't repeated those tests with the 'steps to reproduce' in this report (bug #669537), but can do to confirm the regression if needed.
Maybe this helps for finding / evaluating a solution. Possibly the regression was introduced by the new code for the connector tool that was merged at that time.
[1] <https:/ /bugs.launchpad .net/inkscape/ +bug/665316> comment #4