Hi experts,
We've upgraded APEX from 5.0 to 24.1. It's been very hard, but we're in Prod since 3-4 months ago.
Now, we're experiencing an issue when opening theme roller. The spinner never hides and we can't make any changes in the style:


Two errors in console:
VM26123:428 Uncaught TypeError: Cannot read properties of null (reading 'ratio')
at Object.refreshContrastInfo (<anonymous>:428:94)
at Object.init (<anonymous>:489:34)
at t.<computed>.<computed>._callPropertyInit (widget.propertyEditor.js:2146:53)
at t.each.r.<computed> [as _callPropertyInit] (desktop_all.min.js?v=24.1.7:39:2898)
at t.<computed>.<computed>.refresh (widget.propertyEditor.js:2693:20)
at t.each.r.<computed> [as refresh] (desktop_all.min.js?v=24.1.7:39:2898)
at t.<computed>.<computed>._setOption (widget.propertyEditor.js:2132:20)
at t.each.r.<computed> [as _setOption] (desktop_all.min.js?v=24.1.7:39:2898)
at t.<computed>.<computed>._setOptions (desktop_all.min.js?v=24.1.7:39:6115)
at t.<computed>.<computed>.option (desktop_all.min.js?v=24.1.7:39:6050)
/ords/wwv_flow.ajax?p_context=12300:1:6796779060513:1
Failed to load resource: the server responded with a status of 413 (Request Entity Too Large)
The issue is reproducible in apex.oracle.com:
Workspace: AROSTEGUI
User: OTNFORUMS
Pwd: "Thanks4Help!"
App: 190486
Thanks,
Jose.