With Citrix Receiver 13.5 print problems in legacy sessions can occur.
VMware Horizon
External drives mounted already before connection, do not appear in the remote desktop. Workaround: map the directory /media as a drive in your desktop. Then the external devices will show up inside the media drive.
Client drive mapping and USB redirection for storage devices should not be enabled both at the same time.
On the one hand, if you want to use USB redirection for your storage devices: Note that the USB on-insertion feature is only working if the client drive mapping is switched off. In the IGEL Setup client drive mapping can be found in: Sessions > Horizon Client > Horizon Client Global > Drive Mapping > Enable Drive Mapping. It is also recommended to disable local Storage Hotplug: On page Devices > Storage Devices > Storage Hotplug, put number of storage hotplug devices to 0.
On the other hand, if you use drive mapping instead, it is recommended that you should either switch off USB redirection entirely or at least deny storage devices by adding a filter to the USB class rules. And because Horizon Client relies on the OS to mount the storage devices itself, please go to setup page: Devices > Storage Devices > Storage Hotplug and switch on 'Enable dynamic drive mapping' and put 'Number of storage hotplug devices' to at least 1.
Firefox
Because the support for the gstreamer framework was dropped by recent Firefox versions, support for H264 decoding in the browser is not possible anymore due to licensing restrictions.
After firmware update, a fullscreen browser session starts onetime in window mode. Afterwards the fullscreen mode is functional again.
Hardware
The TrackPoint and TrackPoint keys of the Toshiba Portege X30-D laptop are not working.