Hi, I've been using display fusion for a few years now. I've had this small issue with Firefox & Display Fusion for a while now (year+ maybe?)

The problem
Sometimes when I use the shortcut to keys (CTRL+WIN+X) to move Firefox to the next monitor, instead of moving it sort of jumps a little bit but ends up back where it started. When this happens I have to try several times until it eventually switches monitors. Firefox is the only program I've had this issue with. I believe this issue started with Firefox 4 (tabs on the top). It's really unpredictable and hard to reproduce, but I think I've managed to capture it in my "detailed log" that is attached. I'll try and dig through it to find any suspicious logs.

It's not a huge bug/issue by any means, but who knows maybe fixing this will fix something else?

Thanks,
Simon

I'm attaching another log file. I captured it right after I had Firefox "jump" on me, it only happened once before actually switching monitors. The time it happened was right around 10:00am which is pretty close to the end of the log file.

Thanks,
Simon

Woops, sorry for not including that.
OS: Win7 x64
Display Fusion Version: 4.0.0 b17
Firefox Version: 13 (beta channel)

Middle clicking the titlebar opens a new tab with Firefox 4+. When I'm having the issue, I can middle click the Minimize, Maximize/Restore, Close buttons and it works fine.

I've set Display Fusion to log "All Lines" and I'll try and capture it next time it acts up.

I've attached another log file. I believe the issue occurred around 2012/05/10 08:36:44.72. I've also attached the information in the Troubleshooting tab, I had to trim out some information about Task Manager because it was over 10MB. Hopefully this will give some more insight as to what's going on.

I do have a number of Firefox Addons, hopefully they're not interfering with DF. I can try disabling them and browsing around for a bit and see if I can still replicate this issue.

So I disabled all but to of my Firefox Addons (except Adblock Plus and Download Statusbar) and plugins (except Flash) yesterday. I just tried to move Firefox again and it was acting up again.

I attached the log file again, I believe this was the first key press:

I'm really not sure at this point. I've tried disabling all extensions/plugins but the problem still persists to some point.

I have a couple things I'd like to try when I get the time..

• Try installing display fusion on my laptop and hooking it up to my monitor
• Try a new Firefox profile

I just installed 4.1.0 b11 which was said to have "Fix: Resolved a maximized Firefox window movement issue". I'm not sure if that was targeted at the issue I've been having or another issue. Either way, I'm still experiencing my issue.

I noticed that maximized windows move a lot slower than non-maximized windows - that is to say when they move at all.

I've been busy with other stuff and I do still need to try with a fresh firefox profile to see if that resolves anything.

I'm up to date on the beta channel, sitting at version 15.0 right now.

I think I know why I said it seems slower. When Firefox is maximized, it won't change windows until the Win + X keys are released (Ctrl can still be pressed). When minimized or using any other programs, the window switches when all 3 keys are pressed down. I don't want to get to off topic, but is this new?

Things test fine after updating. I'll reply if I have any issues down the road.

I did end up installing DF on my laptop which is setup with 2 monitors and I haven't had any issues with Firefox yet. I've had DF installed on my desktop for a long time, so maybe somewhere along the way some got slightly corrupted?

Anyway, looks good. Thanks for the awesome product

I was having the same issue for almost a year now as well but just dealt with it. Finally looked to see if there was a solution today and TaDa, someone else had the same issue and it's just been resolved! Thanks!

Huh.. that's an awkward bug. Glad you were able to track that down. Any details on what type of Flash content?