For the first problem,
We have seen an issue like this crop up since a recent windows update; this is so far exclusive to users of our 325 and 325.1 builds of the software. We have an experimental registry fix, however it disables much of the Touch functionality, so in your case I would not recommend it, If you do decide you want it I can provide this though.
Normally your would never hear us say this, but right now I would prefer to suggest rolling back to a previous build; one such as build 324.3, which so far no one has had this issue with. An installer for that version is available here: http://www.docu-track.co.uk/builds/7.0. ... DFXVE7.zip
** Note that you will have to uninstall the current version of the software before running this installer.
For problem #2.
Depending on the stylus you are using the right click context menu may open instead with the thumb button, please confirm that this alternative does not work for you. If that does not work, please inform if it works after the rollback as well. To my knowledge we did not change anything in touch/stylus functionality between these versions, however something else may be affecting them.