[1376] scrollBehavior Glitches

Hi. We have various issues reported for scrollBehavior not behaving as desired. Maybe use-cases differ but almost all of them are related to the same known issue and we are aware and plan to help fixing it. Please don't make/reopen duplicated issues as there is enough info about the problem.It just makes the process harder. As of always contributions and PRs are appreciated to both vue-router and nuxt for possible fixes.

vue-router

• Handle scrollBehaviour with transitions (vuejs/vue-router#1263)
• Another detail of scrollBehavior wrapped in transition(vuejs/vue-router#1373)
• scrollBehavior doesn't work for initial route in Firefox (vuejs/vue-router#1585)
• Need a way to set what scroll position is saved (vuejs/vue-router#1187)
• Navigating back should retain the scroll position. (vuejs/vue-router#1669)
• Support parent container for scroll behavior (vuejs/vue-router#1249)
• Calcurated scroll position is incorrect in some browser with animation (vuejs/vue-router#1530)

Issues

• Strange behavior in Firefox browser when page transition (#1373)
• What causes a glitch when page transition in Firefox? (#1002)
• Delayed scroll top possible? (#1355)
• ScrollBehavior: Fires too early (#1036)
• Navigating back should retain the scroll position. (#1182)

Reproductions

• https://github.com/krestaino/scroll-position-nuxt (@krestaino, #1182)
• http://jsfiddle.net/qw4hbgek (@posva, vuejs/vue-router#1263)
• http://jsfiddle.net/xctnu8r3/2 (@nickforddesign , vuejs/vue-router#1373)
• https://github.com/vuejs/vue-router/tree/dev/examples/scroll-behavior (@hworld, vuejs/vue-router#1585)
• http://codepen.io/brad426/pen/pezRge (@brad426)

Misc

• https://nuxtjs.org/faq/css-flash