diff --git a/theme/boost/scss/moodle/bootstrap-rtl.scss b/theme/boost/scss/moodle/bootstrap-rtl.scss
index da2a1e14525..ede468e9c7a 100644
--- a/theme/boost/scss/moodle/bootstrap-rtl.scss
+++ b/theme/boost/scss/moodle/bootstrap-rtl.scss
@@ -13,10 +13,31 @@
     }
 }
 
-.dir-rtl .custom-select {
-    background-position: 0.75rem center;
-}
+.dir-rtl {
+    .custom-select {
+        background-position: 0.75rem center;
+    }
 
-.dir-rtl .custom-switch .custom-control-input:checked ~ .custom-control-label::after {
-    transform: translateX(-($custom-switch-width - $custom-control-indicator-size));
+    .custom-switch .custom-control-input:checked ~ .custom-control-label::after {
+        transform: translateX(-($custom-switch-width - $custom-control-indicator-size));
+    }
+
+    .tooltip {
+        &.bs-tooltip-left,
+        &.bs-tooltip-right {
+            .arrow {
+                transform: rotate(180deg);
+            }
+        }
+
+        &.bs-tooltip-left .arrow {
+            left: auto;
+            right: 0;
+        }
+
+        &.bs-tooltip-right .arrow {
+            left: 0;
+            right: auto;
+        }
+    }
 }
diff --git a/theme/boost/style/moodle.css b/theme/boost/style/moodle.css
index 384dc354f9e..c6df542e2ec 100644
--- a/theme/boost/style/moodle.css
+++ b/theme/boost/style/moodle.css
@@ -22861,10 +22861,20 @@ a.text-dark:hover, a.text-dark:focus {
 .dir-rtl .custom-select {
   background-position: 0.75rem center;
 }
-
 .dir-rtl .custom-switch .custom-control-input:checked ~ .custom-control-label::after {
   transform: translateX(-0.9375rem);
 }
+.dir-rtl .tooltip.bs-tooltip-left .arrow, .dir-rtl .tooltip.bs-tooltip-auto[x-placement^=left] .arrow, .dir-rtl .tooltip.bs-tooltip-right .arrow, .dir-rtl .tooltip.bs-tooltip-auto[x-placement^=right] .arrow {
+  transform: rotate(180deg);
+}
+.dir-rtl .tooltip.bs-tooltip-left .arrow, .dir-rtl .tooltip.bs-tooltip-auto[x-placement^=left] .arrow {
+  left: auto;
+  right: 0;
+}
+.dir-rtl .tooltip.bs-tooltip-right .arrow, .dir-rtl .tooltip.bs-tooltip-auto[x-placement^=right] .arrow {
+  left: 0;
+  right: auto;
+}
 
 /**
  * Moodle variables
diff --git a/theme/classic/style/moodle.css b/theme/classic/style/moodle.css
index 88e2dc8d6b9..cc4dc6c2e17 100644
--- a/theme/classic/style/moodle.css
+++ b/theme/classic/style/moodle.css
@@ -22861,10 +22861,20 @@ a.text-dark:hover, a.text-dark:focus {
 .dir-rtl .custom-select {
   background-position: 0.75rem center;
 }
-
 .dir-rtl .custom-switch .custom-control-input:checked ~ .custom-control-label::after {
   transform: translateX(-0.75rem);
 }
+.dir-rtl .tooltip.bs-tooltip-left .arrow, .dir-rtl .tooltip.bs-tooltip-auto[x-placement^=left] .arrow, .dir-rtl .tooltip.bs-tooltip-right .arrow, .dir-rtl .tooltip.bs-tooltip-auto[x-placement^=right] .arrow {
+  transform: rotate(180deg);
+}
+.dir-rtl .tooltip.bs-tooltip-left .arrow, .dir-rtl .tooltip.bs-tooltip-auto[x-placement^=left] .arrow {
+  left: auto;
+  right: 0;
+}
+.dir-rtl .tooltip.bs-tooltip-right .arrow, .dir-rtl .tooltip.bs-tooltip-auto[x-placement^=right] .arrow {
+  left: 0;
+  right: auto;
+}
 
 /**
  * Moodle variables