OK, so I'm having this problem that sometimes when I speak to NPCs I click on an option but another option is chosen. So my char keep saying the wrong things now and then, which is really annoying. Are there any mods yet that fix this? Because the USKP doesn't seem to...

There was some talk about fixing this hugely annoying issue in a SkyUI thread some time ago but nothing came of it to my knowledge. Perhaps it's on a to-do list for a future version but as of now it remains unfixed by that or any other mod that I'm aware of. From what I remember it had something to do with inheirent security features of flash and/or scaleform that the new UI for this game uses so it may be difficult to fix. You might want to ask in the SkyUI thread if this can be looked at.

Seems It can't be fixed unfortunately.