Same issue here (along with it crashing) on Ubuntu 13.10, 64bit with a radeon 7790.
Duplicate of https://github.com/ValveSoftware/Dota-2/issues/949. Please report Dota 2 issues on https://github.com/ValveSoftware/Dota-2/.
Closing as duplicate.
Nothing extracted yet.
Here is a screenshot:
http://www.enlightenment.org/ss/e-52862de229d492.74647130.png
As you can see, new heroes does not appear on my screen.
System information:
OS Arch Linux [Kernel 3.11.6]
DE Enlightenment17 latest stable
Driver video catalyst hd234k
Video ATI Radeon HD4250 OC up to 750Mhz, no sideport, UMA 1GB 1720Mhz.
Game: Dota 2 (Three Spirits update)
Steam: Latest Beta (15.11.2013)