diff --git a/theme/boost/scss/moodle/bootstrap-rtl.scss b/theme/boost/scss/moodle/bootstrap-rtl.scss
index f6a99006a33..5433afa86bf 100644
--- a/theme/boost/scss/moodle/bootstrap-rtl.scss
+++ b/theme/boost/scss/moodle/bootstrap-rtl.scss
@@ -49,6 +49,7 @@
             .arrow {
                 transform: rotate(180deg);
                 left: subtract(-$popover-arrow-height, $popover-border-width);
+                right: auto;
             }
         }
         &.bs-popover-left,
@@ -57,6 +58,7 @@
             margin-left: 0;
             .arrow {
                 transform: rotate(180deg);
+                left: auto;
                 right: subtract(-$popover-arrow-height, $popover-border-width);
             }
         }
diff --git a/theme/boost/style/moodle.css b/theme/boost/style/moodle.css
index c8233b0d07a..d2db14b2741 100644
--- a/theme/boost/style/moodle.css
+++ b/theme/boost/style/moodle.css
@@ -22952,6 +22952,7 @@ a.text-dark:hover, a.text-dark:focus {
 .dir-rtl .popover.bs-popover-right .arrow, .dir-rtl .popover.bs-popover-auto[x-placement^=right] .arrow {
   transform: rotate(180deg);
   left: calc(-0.5rem - 1px);
+  right: auto;
 }
 .dir-rtl .popover.bs-popover-left, .dir-rtl .popover.bs-popover-auto[x-placement^=left] {
   margin-right: 0.5rem;
@@ -22959,6 +22960,7 @@ a.text-dark:hover, a.text-dark:focus {
 }
 .dir-rtl .popover.bs-popover-left .arrow, .dir-rtl .popover.bs-popover-auto[x-placement^=left] .arrow {
   transform: rotate(180deg);
+  left: auto;
   right: calc(-0.5rem - 1px);
 }
 
diff --git a/theme/classic/style/moodle.css b/theme/classic/style/moodle.css
index 382b9da4dbf..009232f9704 100644
--- a/theme/classic/style/moodle.css
+++ b/theme/classic/style/moodle.css
@@ -22952,6 +22952,7 @@ a.text-dark:hover, a.text-dark:focus {
 .dir-rtl .popover.bs-popover-right .arrow, .dir-rtl .popover.bs-popover-auto[x-placement^=right] .arrow {
   transform: rotate(180deg);
   left: calc(-0.5rem - 1px);
+  right: auto;
 }
 .dir-rtl .popover.bs-popover-left, .dir-rtl .popover.bs-popover-auto[x-placement^=left] {
   margin-right: 0.5rem;
@@ -22959,6 +22960,7 @@ a.text-dark:hover, a.text-dark:focus {
 }
 .dir-rtl .popover.bs-popover-left .arrow, .dir-rtl .popover.bs-popover-auto[x-placement^=left] .arrow {
   transform: rotate(180deg);
+  left: auto;
   right: calc(-0.5rem - 1px);
 }