Index: src/wp-content/themes/twentynineteen/sass/site/primary/_posts-and-pages.scss
===================================================================
--- src/wp-content/themes/twentynineteen/sass/site/primary/_posts-and-pages.scss	(revision 44335)
+++ src/wp-content/themes/twentynineteen/sass/site/primary/_posts-and-pages.scss	(working copy)
@@ -200,6 +200,7 @@
 
 			&:after {
 				content: "\02192";
+				display: inline-block;
 				margin-left: 0.5em;
 			}
 
Index: src/wp-content/themes/twentynineteen/style-rtl.css
===================================================================
--- src/wp-content/themes/twentynineteen/style-rtl.css	(revision 44335)
+++ src/wp-content/themes/twentynineteen/style-rtl.css	(working copy)
@@ -2614,6 +2614,7 @@
 
 .entry .entry-content .more-link:after {
   content: "\02192";
+  display: inline-block;
   margin-right: 0.5em;
 }
 
Index: src/wp-content/themes/twentynineteen/style.css
===================================================================
--- src/wp-content/themes/twentynineteen/style.css	(revision 44335)
+++ src/wp-content/themes/twentynineteen/style.css	(working copy)
@@ -2620,6 +2620,7 @@
 
 .entry .entry-content .more-link:after {
   content: "\02192";
+  display: inline-block;
   margin-left: 0.5em;
 }