Clock says 15:38. Go to time settings. Turn off network time. Turn it back on. Wait for 10 seconds or so.. time updates to correct time and says 16:38. (either Cinnamon loses track of ntp when disconnected/reconnected to network, or it fails to use it at login time)
Installing Nvidia drivers makes tty and boot screen lo-res (http://www.conanblog.me/it/how-to-get-the-high-resolution-for-tty-back-after-nvidia-driver-update-in-ubuntu/)
Brasero Wont open after burning a disk
In Spices the "Updates Available!" button is visually glitchy
Moving applets in cinnamon panel edit mode on, glitches out systray icons when it is shifted
Cinnamon Settings start in advanced mode on fresh install even if not in admin mode
Cannot Middle click most toolbar items in Nemo
User Applet is visually off in MintX Cinnamon theme
Changing Wallpaper somtimes freezes cinnamon
Calender Applet should link to "cinnamon-settings calendar"
When a maximized window is minimized, and you activate the hot corner or expo, it makes a split second glitch view of that window
The mint logo is a bitmap(png) and is blurry when the panel is resized, it should be svg
Mounted disks shouldest show by default one the desktop?
In Applets/Desklet config, the more actions button icon makes no sense, should be cog
Volume change sound is terribly high pitched, it should be the bubble sound
LibreOffice Loading bar is orange
Rename file/folder field can be hard to read in some cases, eg. the desktop
Changing default applications does nothing
Copying large files (< 200mb), nemo reports 99% the whole time.
System: gksu covers cinnamon panel and clutter layer (offending code is in libgksu, won't fix, likely to migrate to pkexec instead)
System: Support for Wacom tablet (configurable via the command line, will need to join forces with Xfce/MATE if we want to develop a cross DE UI. This doesn't justify pulling resources to make a Cinnamon specific solution)
System: EFI booth path isn't standard (EFI installation in Virtualbox works fine, but upon reboot it loses its NVRAM and isn't able to find the EFI boot files)
MDM: l10n doesn't cover new features (MDM 1.4 is still using the l10n it inherited from GDM. Decision was taken to migrate MDM entirely to Mint/LP translations in 1.6, not just mdmwebkit/mdmsetup).