diff --git a/src/components/post_status_form/post_status_form.js b/src/components/post_status_form/post_status_form.js
index 0ce2aff0..fa994c87 100644
--- a/src/components/post_status_form/post_status_form.js
+++ b/src/components/post_status_form/post_status_form.js
@@ -246,7 +246,7 @@ const PostStatusForm = {
           }
           this.$emit('posted')
           let el = this.$el.querySelector('textarea')
-          el.style.height = '16px'
+          el.style.height = undefined
           this.error = null
         } else {
           this.error = data.error
@@ -294,13 +294,15 @@ const PostStatusForm = {
       e.dataTransfer.dropEffect = 'copy'
     },
     resize (e) {
-      if (!e.target) { return }
-      const vertPadding = Number(window.getComputedStyle(e.target)['padding-top'].substr(0, 1)) +
-            Number(window.getComputedStyle(e.target)['padding-bottom'].substr(0, 1))
-      e.target.style.height = 'auto'
-      e.target.style.height = `${e.target.scrollHeight - vertPadding}px`
-      if (e.target.value === '') {
-        e.target.style.height = '16px'
+      const target = e.target || e
+      if (!(target instanceof window.Element)) { return }
+      const vertPadding = Number(window.getComputedStyle(target)['padding-top'].substr(0, 1)) +
+            Number(window.getComputedStyle(target)['padding-bottom'].substr(0, 1))
+      // Auto is needed to make textbox shrink when removing lines
+      target.style.height = 'auto'
+      target.style.height = `${target.scrollHeight - vertPadding}px`
+      if (target.value === '') {
+        target.style.height = undefined
       }
     },
     clearError () {