Why could I not change the icon of the default Add media button that I added into the toolbar of TinyMCE?

Related Posts:

1. How can I put a custom meta box above the editor but below the title section on the edit post page?
2. Add custom fields within meta box class “on the fly”
3. Disable the visibility options in WP
4. How to replace default icon on “Add Media” button?
5. can’t see all pages in dashboard (can only see 3) /wp-admin/edit.php > 500 error
6. WordPress Post Editor Toolbar Missing
7. How to add “Check all” to Edit post page in WP?
8. How do I disable wpautop for a specific block?
9. Is it possible to “comment out” text in a post?
10. Make substitute in all WordPress posts
11. editor-style.css Functionality
12. Show box only on edit post
13. Adding a tooltip above Categories postbox in Post Editor
14. YouTube Video autoplay
15. How can I define a max width for content in post editor based on a page template?
16. wp_update_post() blank screen
17. Post editor loads empty
18. Word count not accurate – potential bug
19. Prepare content from a different CMS/WYSIWYG to the WordPress editor
20. Admin sidebar overlapping on editor when saving draft
21. How can I remove the editor from the ‘main posts page’?
22. Theme post editor does not have Visual & Html tabs and all buttons?
23. Confirmation message when submitting post for review
24. < ! - - more - - > tag not working
25. How can I (for the long term) style the classic editor’s TEXTAREA?
26. how can i add extra parameter to edit post link?
27. Empty paragraphs around figure and figcaption tags when using markdown
28. How can I implement a simple post editor?
29. How to retain last modification date on draft edit
30. Disable emojicons introduced with WP 4.2
31. Unable to select an old date in wordpress
32. How to add editor’s name to entry meta byline?
33. How to add button to post page WordPress 5.x
34. What are the better WYSIWYG post editor replacement alternatives?
35. How can I hook into the post editor title field in order to change the HTML?
36. WordPress MultiSite Paste from Word Tool Does not work
37. How to display and use all existing tags at my write-post-at-frontend-panel?
38. How to after saving or publishing a post redirect back to the original page
39. How to add iOS & fav icons to the theme?
40. Should the WP post editor B (bold) button be inserting a tag instead of in HTML5?
41. Using WPAlchemy metabox values in another metabox
42. How to add multiple checkbox elements to media attachments?
43. Editing a Post, 99% CPU?
44. Add 32×32 icon to custom post type index page
45. How to get value of selected page template in Gutenberg editor?
46. WordPress hook that gets featured image from direct URL?
47. Plugin that inserts favicon next to links
48. How to add an RSS logo to my blogs header?
49. Add icon/badge next to posttitle of specific category
50. Jetpack social icons in other places on site
51. How to add Sidebar and Full width option in post editor
52. Why would media_sideload_image() not work locally?
53. Prevent stripping MathML tags on post save
54. How to insert icon in site title
55. Add the description field on the attached media
56. Set Site Icon programmatically (eg. using `wp cli`)
57. How to allow users to post only in certain category and hide elements from edit page?
58. Media added with shortcodes not “linked” with post
59. Edit page blank, control buttons missing
60. Add default page editor to an admin settings page
61. Embedded tweets get wrapped in tags and fail to load
62. Dashicons and Pseudo :before
63. Xili language plugin not showing language flag [closed]
64. Clicking Add New button for custom taxonomy only moves element
65. Show Author information on post page on dashboard
66. How to Change custom post type Dashicon Color
67. Remove Permalink From Admin Edit Post
68. Display an icon with get_post_meta?
69. Suddenly new posts have the default permalink instead of the post name
70. Font Awesome Icons only squares
71. find out reason of “Updating failed” in Post-editor
72. Notion-like editing and layout with a convenient freeform collaborative editor in WordPress? [closed]
73. Prevent all users from editing posts except admins using hooks
74. Force category choice before creating new post
75. Dynamically set taxonomy term and show admin notice on post save
76. Feauterd image meta box not showing up
77. Can wp_get_image_editor convert to icon?
78. Automatically add a character to field in edit post page
79. remove specificly the last tag in all posts
80. how to move a plugin-block in Edit Post page back to bottom area?
81. How to remove the icons corresponding to “by” (author) and “date” from posts?
82. Placing Lock Icon on WooCommmerce “Place Order” Checkout Button (WordPress ‘ignoring’ Changes…)
83. After updating the custom post type, metafields disappear from the post.php edit menu, how do I fix it?
84. Swap SVG icons in child themes
85. Bold button gets unchecked on enter click when bullet button is also selected in WP Editor
86. Wrap post images with a link, not figure (image_send_to_editor doesn’t work)
87. jQuery for Fade Preload Causes My Site Favicon to Disappear from Tab of Browser
88. Custom Icon assigned to menu items not working for multi-site networks
89. Where to place a svg chevron down in my custom walker?
90. Using get_the_excerpt in edit-post
91. Modify loop to include all post statuses not just ‘published’
92. Edit is changing my custom’s post type parent id
93. How to remove UI access to Custom Post Type using direct links?
94. &nbsp when I use ENTER for skipping line
95. creating different edit screens for different roles
96. prevent caching during tinymce custom button development
97. Split post edit screen into sub-edit screens for users, is this good or bad, and is it possible?
98. How to replace plugin icon?
99. Use add_action to run a script, but only on the post editor page
100. wordpress 6.2 is alignfull and lignwide removed?