Fix ignored blank lines

Author: sparklost

lib/mixins/canvas-drawer.js

@@ -695,17 +695,19 @@ function drawLines(
     const editorTokensForScreenRow = editor.tokensForScreenRow(line)
     const numToken = editorTokensForScreenRow.length
     const numTokenToRender = Math.min(numToken, maxTokensInOneLine)
+
+    if (lastLine !== line) {
+      x = 0
+      y += lineHeight
+      lastLine = line
+      context.clearRect(x, y, canvasWidth, lineHeight)
+    }
+
     for (let iToken = 0; iToken < numTokenToRender; iToken++) {
       const token = editorTokensForScreenRow[iToken]
       const tokenText = token.text.replace(invisibleRegExp, " ")
       const tokenScopes = token.scopes
 
-      if (lastLine !== line) {
-        x = 0
-        y += lineHeight
-        lastLine = line
-        context.clearRect(x, y, canvasWidth, lineHeight)
-      }
       if (x > canvasWidth) {
         continue
       }