Consider m12 for backwards compatibility

core-bundle/contao/themes/flexible/entrypoints.json

@@ -2,37 +2,37 @@
   "entrypoints": {
     "backend": {
       "css": [
-        "/system/themes/flexible/backend.9204935f.css"
+        "/system/themes/flexible/backend.12c78b38.css"
       ]
     },
     "confirm": {
       "css": [
-        "/system/themes/flexible/confirm.59938df3.css"
+        "/system/themes/flexible/confirm.8fdef599.css"
       ]
     },
     "conflict": {
       "css": [
-        "/system/themes/flexible/conflict.9dbb4665.css"
+        "/system/themes/flexible/conflict.4b076eb8.css"
       ]
     },
     "diff": {
       "css": [
-        "/system/themes/flexible/diff.d5725281.css"
+        "/system/themes/flexible/diff.1a5d53b0.css"
       ]
     },
     "help": {
       "css": [
-        "/system/themes/flexible/help.1acc36ef.css"
+        "/system/themes/flexible/help.293929f2.css"
       ]
     },
     "login": {
       "css": [
-        "/system/themes/flexible/login.423dcfc9.css"
+        "/system/themes/flexible/login.1fe9630a.css"
       ]
     },
     "popup": {
       "css": [
-        "/system/themes/flexible/popup.cdce2188.css"
+        "/system/themes/flexible/popup.6c65006a.css"
       ]
     },
     "tinymce": {

core-bundle/contao/themes/flexible/manifest.json

@@ -1,20 +1,20 @@
 {
-  "backend.css": "/system/themes/flexible/backend.9204935f.css",
-  "confirm.css": "/system/themes/flexible/confirm.59938df3.css",
-  "conflict.css": "/system/themes/flexible/conflict.9dbb4665.css",
-  "diff.css": "/system/themes/flexible/diff.d5725281.css",
-  "help.css": "/system/themes/flexible/help.1acc36ef.css",
-  "login.css": "/system/themes/flexible/login.423dcfc9.css",
-  "popup.css": "/system/themes/flexible/popup.cdce2188.css",
+  "backend.css": "/system/themes/flexible/backend.12c78b38.css",
+  "confirm.css": "/system/themes/flexible/confirm.8fdef599.css",
+  "conflict.css": "/system/themes/flexible/conflict.4b076eb8.css",
+  "diff.css": "/system/themes/flexible/diff.1a5d53b0.css",
+  "help.css": "/system/themes/flexible/help.293929f2.css",
+  "login.css": "/system/themes/flexible/login.1fe9630a.css",
+  "popup.css": "/system/themes/flexible/popup.6c65006a.css",
   "tinymce.css": "/system/themes/flexible/tinymce.e5009f94.css",
   "tinymce-dark.css": "/system/themes/flexible/tinymce-dark.596023db.css",
-  "backend.9204935f.css.map": "/system/themes/flexible/backend.9204935f.css.map",
-  "confirm.59938df3.css.map": "/system/themes/flexible/confirm.59938df3.css.map",
-  "conflict.9dbb4665.css.map": "/system/themes/flexible/conflict.9dbb4665.css.map",
-  "diff.d5725281.css.map": "/system/themes/flexible/diff.d5725281.css.map",
-  "help.1acc36ef.css.map": "/system/themes/flexible/help.1acc36ef.css.map",
-  "login.423dcfc9.css.map": "/system/themes/flexible/login.423dcfc9.css.map",
-  "popup.cdce2188.css.map": "/system/themes/flexible/popup.cdce2188.css.map",
+  "backend.12c78b38.css.map": "/system/themes/flexible/backend.12c78b38.css.map",
+  "confirm.8fdef599.css.map": "/system/themes/flexible/confirm.8fdef599.css.map",
+  "conflict.4b076eb8.css.map": "/system/themes/flexible/conflict.4b076eb8.css.map",
+  "diff.1a5d53b0.css.map": "/system/themes/flexible/diff.1a5d53b0.css.map",
+  "help.293929f2.css.map": "/system/themes/flexible/help.293929f2.css.map",
+  "login.1fe9630a.css.map": "/system/themes/flexible/login.1fe9630a.css.map",
+  "popup.6c65006a.css.map": "/system/themes/flexible/popup.6c65006a.css.map",
   "tinymce.e5009f94.css.map": "/system/themes/flexible/tinymce.e5009f94.css.map",
   "tinymce-dark.596023db.css.map": "/system/themes/flexible/tinymce-dark.596023db.css.map"
 }

core-bundle/contao/themes/flexible/styles/basic.css

@@ -958,6 +958,7 @@ a.tl_submit {
 	/* Backwards compatibility */
 	*:not(.widget-group) > .m12 {
 		margin: 0 15px;
+		padding: 16px 0;
 	}
 
 	*:not(.widget-group) > .w50 {
@@ -972,6 +973,7 @@ a.tl_submit {
 
 	*:not(.widget-group) > .cbx.m12 {
 		min-height: 80px;
+		box-sizing: border-box;
 	}
 }
 

core-bundle/public/backend.be7cab7b.js.LICENSE.txt

@@ -0,0 +1 @@
+/*! regenerator-runtime -- Copyright (c) 2014-present, Facebook, Inc. -- license (MIT): https://github.com/facebook/regenerator/blob/main/LICENSE */

core-bundle/public/entrypoints.json

@@ -2,7 +2,7 @@
   "entrypoints": {
     "backend": {
       "js": [
-        "/bundles/contaocore/backend.147aae9f.js"
+        "/bundles/contaocore/backend.be7cab7b.js"
       ]
     }
   }

core-bundle/public/manifest.json

@@ -1,4 +1,4 @@
 {
-  "backend.js": "/bundles/contaocore/backend.147aae9f.js",
-  "backend.147aae9f.js.map": "/bundles/contaocore/backend.147aae9f.js.map"
+  "backend.js": "/bundles/contaocore/backend.be7cab7b.js",
+  "backend.be7cab7b.js.map": "/bundles/contaocore/backend.be7cab7b.js.map"
 }