@ernie I am also experiencing excessive but inconsistent (around 2 out of 3 attempts) crashing on opening of a New Tab in the discussed version (51.0.2830.55). I think this is related to the latest "stable" build as everything was working fine in the previous version and the problem started happening after the most recent update (few hours ago). I have started a separate thread discussing my problem but I thought I will let you know that you are not alone where crashing is concerned...
Posts made by ebon-hawk
RE: Crashing, white bars on screenOpera for Mac
Opera Crashing on New Tab function...Opera for Mac
The latest version of Opera for Mac... 51.0.2830.55 is crashing on New Tab function.
Specifically, when one tries to open a new tab, either by pressing + icon or by right clicking (with magic mouse) on the title bar and selecting new tab more often than not the browser will close and reopen, displaying Opera crashed message on rare occasions.
I have conducted some additional testing, such as navigating between locations within the same tab, locations such as a website, Settings page, About page and so on, the transition is fine within the same tab but the moment I try to do the same via new tab crashing starts to happen in around two out of three attempts (66% failure).
I have cleared the history, restarted the browser, restarted the Mac, tested the browser as a single running application, ensured that no extensions are active (there were none to begin with) and even re-installed (something I thought I would have to do on Windows PC only) from full DMG download of the same version. Problem persists.
Opera is my main browser and until few hours ago (Western Australia time) it was working fine and without any problems what so ever until I updated to the latest version listed above (via About page). So it goes without saying that this is a disappointing situation...
OS: MacOS Sierra v10.12.6 (no outstanding updates),
Hardware: MacBook pro (13 inch, 2017, no touch bar version),