Have not heard this one before Chris. Could you please tell us more about your project. We might ask you to post a copy of your aia file to see if we can replicate this.
Are you using the emulator or the device for development?
Are you using Compannion 2.35 or an earlier version.
How many screens do you have?
Does your project have lots of blocks or is it a small project.
Do you have lots of windows open on your browser in addition to AI2? or are you streaming music?
Does this happen with all blocks or just certain ones? Which ones?
Do you have lots of blocks collapsed anywhere? Are there disabled blocks inside the collapsed blocks? I ask this because we know that in certain situations, having one or more blocks like this will affect the snapping of puzzle pieces into one another. The behavior you relate seems similar.
Here are some things you might try:
1) Clear the browser cache.
2) Try Firefox instead of Chrome
3) If you have collapsed blocks inside of disabled blocks try this. Make a copy of your Project. On the COPY, either delete the collapsed blocks or uncollapse them and see what happens to your display. any improvement? Also just delete these blocks ...yes, doing this makes the copied project 'useless' however, we want to know it you can now snap the blocks properly ... this is a huge guess.
4) how large is your aia and do you use an Adblocker. Possibly disable the adblocker for the AI2 website.
Any of this help Chris?