I'm running Opera on a Thinkpad (T530) with native resolution 1920x1080, and I dock with a setup including a 1920x1200 resolution monitor. I do not know whether the resolutions are significant here, but I list them anyway because I feel as though it might play some part. I'm running Win 7 Pro.
Sometimes, after docking/undocking, Opera becomes unresponsive, which I usually notice because it does not appear when I click on the taskbar icon. Sometimes I can kill it by right clicking and selecting close, twice, other times I have to use Process Explorer to kill the root process. Luckily, 95% of the time tabs are remembered, but occasionally the "kill" must have been more drastic and Opera has reopened without any tabs.
This problem has existed for many versions, and it seemed like the sort of thing which would be fixed without me needing to make a specific post, but the fact that it has not leads me to believe that perhaps it is not as common as I suspected. Recently, I have been experimenting with the Vivaldi browser and it has exactly the same problem, suggesting that it is an issue with Chromium. I have not tried using Chrome extensively, but occasionally I have it open and I have never noticed it suffering from this problem.
Has anyone else who uses a laptop which is frequently docked/undocked suffered from this problem? How about anyone who does not dock, but who has a setup which changes resolution for some reason? Other Thinkpad owners?