Change Details

**Steps to replicate the issue** (include links if applicable): * Run the website on an older version of Safari like iOS 13.7 (Safari 13.1) * These Safari 12 and Safari 13 versions are still pretty common on slightly older ipads and iphone devices. * Collapse the ToC menu **What happens?**: * Table of contents remains visible. specifically, it seems that the menu has not switched between the headers {F36418029} **What should have happened instead?**: The menu should have been hidden and should have switched Possible cause/related issue, there is this warning in the console. ``` jQuery.Deferred exception: pinnableBreakpoint.addEventListener is not a function. (In 'pinnableBreakpoint.addEventListener( 'change', disablePinningAtBreakpoint.bind( null, header ) )', 'pinnableBreakpoint.addEventListener' is undefined) (2) ``` Seems like MediaQueryList on older safari doesn't support eventlisteners. **Software version** (skip for WMF-hosted wikis like Wikipedia): **Other information** (browser name/version, screenshots, etc.):

**Steps to replicate the issue** (include links if applicable): * Run the website on an older version of Safari like iOS 13.7 (Safari 13.1) * These Safari 12 and Safari 13 versions are still pretty common on slightly older ipads and iphone devices. * Collapse the ToC menu **What happens?**: * Table of contents remains visible. specifically, it seems that the menu has not switched between the headers {F36418029} **What should have happened instead?**: The menu should have been hidden and should have switched Possible cause/related issue, there is this warning in the console. ``` jQuery.Deferred exception: pinnableBreakpoint.addEventListener is not a function. (In 'pinnableBreakpoint.addEventListener( 'change', disablePinningAtBreakpoint.bind( null, header ) )', 'pinnableBreakpoint.addEventListener' is undefined) (2) ``` Seems like MediaQueryList on older safari doesn't support addEventlistener (it does support the deprecated addListener) **Software version** (skip for WMF-hosted wikis like Wikipedia): **Other information** (browser name/version, screenshots, etc.):

**Steps to replicate the issue** (include links if applicable): * Run the website on an older version of Safari like iOS 13.7 (Safari 13.1) * These Safari 12 and Safari 13 versions are still pretty common on slightly older ipads and iphone devices. * Collapse the ToC menu **What happens?**: * Table of contents remains visible. specifically, it seems that the menu has not switched between the headers {F36418029} **What should have happened instead?**: The menu should have been hidden and should have switched Possible cause/related issue, there is this warning in the console. ``` jQuery.Deferred exception: pinnableBreakpoint.addEventListener is not a function. (In 'pinnableBreakpoint.addEventListener( 'change', disablePinningAtBreakpoint.bind( null, header ) )', 'pinnableBreakpoint.addEventListener' is undefined) (2) ``` Seems like MediaQueryList on older safari doesn't support eaddEventlisteners.er (it does support the deprecated addListener) **Software version** (skip for WMF-hosted wikis like Wikipedia): **Other information** (browser name/version, screenshots, etc.):