Blizzard have updated the known issues list for Fractures in Time. We have an uncompletable achievement, a few Evoker-related issues, some lag in one of the old world Dragonriding races, and more, but the one you should really focus on is that the character delete button may select a different character!
Known Issues (Source)
Achievements
A bug is preventing the completion of the Achievement Chronograde Connoisseur.
Classes
Range indicator and raid frames do not match after logging into an Evoker and then into a different ranged class.
Evoker
Ebon Might does not prefer to affect allies in your raid over players outside your raid.
Racial mounts may not be available for purchase from vendors.
Dragonriding
The first time you attempt the “Razorfen Roundabout” course, you may experience lag.
Quests
The daily quest “Net Worth” may be impossible to complete.
Tracking Appearances
Tracked raid items from the Warlords of Draenor expansion do not display the correct raid difficulty when tracked and do not open to the correct difficulty when viewing the Dungeon Journal.
Trading Post
Some activities may not display correctly once completed.
User Interface
The Delete Character option may not select the correct character to delete.
The size of the Micromenu starts too large and begins at 100% scale in Edit Mode.
Some action bar effects fail to display on macro spells.
