diff --git a/chrome/tab_separator_lines.css b/chrome/tab_separator_lines.css
index 4f61e09..73caa71 100644
--- a/chrome/tab_separator_lines.css
+++ b/chrome/tab_separator_lines.css
@@ -14,9 +14,8 @@ See the above repository for updates as well as full license text. */
 }
 
 .tabbrowser-tab:hover,
-.tabbrowser-tab[beforehovered],
+#tabbrowser-tabs:not([movingtab]) .tabbrowser-tab[beforehovered],
 .tabbrowser-tab[selected],
 .tabbrowser-tab[multiselected],
-.tabbrowser-tab[last-visible-tab],
-.tabbrowser-tab[before-multiselected],
-.tabbrowser-tab[beforeselected-visible]{ border-image: none !important; }
\ No newline at end of file
+#tabbrowser-tabs:not([movingtab]) .tabbrowser-tab[before-multiselected],
+#tabbrowser-tabs:not([movingtab]) .tabbrowser-tab[beforeselected-visible] { border-image: none !important; }
\ No newline at end of file