I’m getting this error in 2.4.5-p12 admin:
main.ERROR: Unable to resolve the source file for ‘adminhtml/Magento/backend/en_GB/mage/adminhtml/wysiwyg/tiny_mce/tinymceAdapter.js’
The file in static content folder is named tinymce5Adapter.js for some reason.
I did notice that in Stores > Configurations > General > WYSIWYG Options > WYSIWYG Editor there is TinyMCE 6. I wonder why it generates version 5 tinymce5Adapter.js file instead of tinymce6Adapter.js. Not sure if it even should create tinymce6Adapter.js, but it is just something I noticed.