>>> My Info: Win7_64, Nightly 46, 32bit, ID 20151221030239 STR: 1. Make sure that (1) you have several profiles (2) when you start Nightly using normal shortcut, it launches default profile 2. Close Nightly, launch Firefox 45- with option -P 3. Select current default profile, uncheck "Use the selected profile without asking at startup" 4. Click "Start Firefox" 5. Close Firefox 6. Launch Nightly using your normal shortcut [It'll open Brand NEW Profile Manager] 7. Click button "Set as default profile" next to the profile from Step 1 (== profile from Step 3), select that profile, click "Start Nightly" 8. Close Nightly 9. Launch Nightly using your normal shortcut Result: It opens Brand NEW Profile Manager Expectations: It should launch the default profile I'm leaving keyword "regressionwindow-wanted" because I can't be sure that this bug was reproducible in Brand NEW Profile Manager from the beginning (bug 1232629)

Comment on attachment 8701422 [details] [diff] [review] profileE.patch Review of attachment 8701422 [details] [diff] [review]: ----------------------------------------------------------------- ::: toolkit/content/aboutProfiles.js @@ +64,5 @@ > + }); > + > + let offline = document.getElementById("work-offline"); > + offline.addEventListener('change', function() { > + /* Bug 257777 */ Please remove this useless comment.