Problem when double-clicking to auto-size column in query window

When I double-click on the column border of the query result window to auto-size a column, I get no resizing and the
followingerror in the log. I get this both with Safari and Chrome. I’m running version 4.1of pgAdmin4. 

Error from Safari:
TypeError: undefined is not an object (evaluating 'b().fromCell’)
    n  sqleditor.js:619264
    (anonymous function) vendor.js: 789612
    trigger  vendor.js: 2206214
    handleHeaderCheck  vendor.js: 2230971
    dispatch  vendor.js: 51259
    (anonymous function)  vendor.js: 1947375

Error  from Chrome:
Uncaught TypeError: Cannot read property 'fromCell' of undefined
    at SlickGrid.n (sqleditor.js?ver=40100:1)
    at i.notify (vendor.js?ver=40100:1)
    at trigger (vendor.js?ver=40100:1)
    at HTMLDivElement.handleHeaderClick (vendor.js?ver=40100:1)
    at HTMLDivElement.dispatch (vendor.js?ver=40100:1)
    at HTMLDivElement.i.dispatch (vendor.js?ver=40100:1)
    at HTMLDivElement.g.handle (vendor.js?ver=40100:1)