app-addons-tilda_pages-func.php.diff

diff --git a/app/addons/tilda_pages/func.php b/app/addons/tilda_pages/func.php
index f8bce00a28..5d9a73cc3b 100644
--- a/app/addons/tilda_pages/func.php
+++ b/app/addons/tilda_pages/func.php
@@ -350,9 +350,14 @@ function fn_tilda_pages_merge_css($page_id, array $css_list)
 
     try {
         $css_content = implode("\n\n", $contents);
+        //Prevent compile CSS calc() properties
+        $css_content = preg_replace('/calc\(([^)(]*(?:\([^)(]*(?:\([^)(]*\)[^)(]*)*\)[^)(]*)*)\)/', 'calc(~"$1")', $css_content);
         $revert_css = file_get_contents(Registry::get('config.dir.design_backend') . 'css/addons/tilda_pages/revert.css');
         $css_content = $revert_css . ' .tilda-pages-container {' . $css_content . '}';
 
+        // FIXME: Fix parsing "0\0" css hack
+        $css_content = str_replace('min-width:0\\0', 'min-width:~"0\\0"', $css_content);
+
         $less = new Less();
         $css_content = $less->compile($css_content);
 

design-backend-css-addons-tilda_pages-revert.css.diff

diff --git a/design/backend/css/addons/tilda_pages/revert.css b/design/backend/css/addons/tilda_pages/revert.css
index 443da1b863..257ede953a 100644
--- a/design/backend/css/addons/tilda_pages/revert.css
+++ b/design/backend/css/addons/tilda_pages/revert.css
@@ -1,3 +1,3 @@
-.tilda-pages-container * {
+.tilda-pages-container *:not(.cm-block-loader *) {
     all:revert;
 }