Change Details

There appears to be a race condition of sorts. I can reproduce it within a minute or so of clicking around but I've not found a consistent pattern. 1. https://commons.wikimedia.org/w/index.php?title=File:AS12-47-6987_(21659597215).jpg&diff=next&oldid=529987348 2. Go "next diff" a few times. 3. Go "previous diff" a few times. 4. Repeat. Actual result: For no apparent reason, the wiki is preventing me from navigating elsewhere, on the incorrect assumption that some edit or other input has been entered by me and that I would lose that by navigating away. {F35310161 height=200}

There appears to be a race condition of sorts. I can reproduce it within a minute or so of clicking around but I've not found a consistent pattern. 1. https://commons.wikimedia.org/w/index.php?title=File:AS12-47-6987_(21659597215).jpg&diff=next&oldid=529987348 2. Go "next diff" a few times. 3. Go "previous diff" a few times. 4. Repeat. Actual result: For no apparent reason, the wiki is preventing me from navigating elsewhere, on the incorrect assumption that some edit or other input has been entered by me and that I would lose that by navigating away. {F35310161 height=200} To try and attribute the issue to something, I looked at the following state from the console: ``` //> $('textarea') Object { length: 0 } ``` ``` //> window.onbeforeunload+'' "function(){var allPanels, hasChanges;allPanels=Object.keys(statementPanels).map(function(propertyId){return statementPanels[propertyId];}).concat(captionsPanel);hasChanges=allPanels.some(function(panel){return panel&&panel.isEditable()&&panel.hasChanges();});if(hasChanges){return mw.msg('wikibasemediainfo-filepage-cancel-confirm');}}" ``` It seems WikibaseMediaInfo is a likely suspect here.

There appears to be a race condition of sorts. I can reproduce it within a minute or so of clicking around but I've not found a consistent pattern. 1. https://commons.wikimedia.org/w/index.php?title=File:AS12-47-6987_(21659597215).jpg&diff=next&oldid=529987348 2. Go "next diff" a few times. 3. Go "previous diff" a few times. 4. Repeat. Actual result: For no apparent reason, the wiki is preventing me from navigating elsewhere, on the incorrect assumption that some edit or other input has been entered by me and that I would lose that by navigating away. {F35310161 height=200} To try and attribute the issue to something, I looked at the following state from the console: ``` //> $('textarea') Object { length: 0 } ``` ``` //> window.onbeforeunload+'' "function(){var allPanels, hasChanges;allPanels=Object.keys(statementPanels).map(function(propertyId){return statementPanels[propertyId];}).concat(captionsPanel);hasChanges=allPanels.some(function(panel){return panel&&panel.isEditable()&&panel.hasChanges();});if(hasChanges){return mw.msg('wikibasemediainfo-filepage-cancel-confirm');}}" ``` It seems WikibaseMediaInfo is a likely suspect here.