fix bugs I introduced with my "cleanup" while adding log e/E format

Author: alexcjohnson

src/plots/cartesian/axes.js

@@ -1094,7 +1094,10 @@ function formatLog(ax, out, hover, extraPrecision, hideexp) {
         hideexp = '';
     }
 
-    if(extraPrecision && (dtChar0 !== 'L')) dtick = 'L3';
+    if(extraPrecision && (dtChar0 !== 'L')) {
+        dtick = 'L3';
+        dtChar0 = 'L';
+    }
 
     if(tickformat || (dtChar0 === 'L')) {
         out.text = numFormat(Math.pow(10, x), ax, hideexp, extraPrecision);
@@ -1106,7 +1109,7 @@ function formatLog(ax, out, hover, extraPrecision, hideexp) {
         if(exponentFormat === 'power' || (isSIFormat(exponentFormat) && beyondSI(p))) {
             if(p === 0) out.text = 1;
             else if(p === 1) out.text = '10';
-            out.text = '10<sup>' + (p > 1 ? '' : MINUS_SIGN) + absP + '</sup>';
+            else out.text = '10<sup>' + (p > 1 ? '' : MINUS_SIGN) + absP + '</sup>';
 
             out.fontSize *= 1.25;
         }