diff --git a/app/src/main/java/app/fedilab/android/mastodon/activities/ComposeActivity.java b/app/src/main/java/app/fedilab/android/mastodon/activities/ComposeActivity.java
index db86865d..6f001fb5 100644
--- a/app/src/main/java/app/fedilab/android/mastodon/activities/ComposeActivity.java
+++ b/app/src/main/java/app/fedilab/android/mastodon/activities/ComposeActivity.java
@@ -866,8 +866,10 @@ public class ComposeActivity extends BaseActivity implements ComposeAdapter.Mana
                     } else {
                         Toasty.info(ComposeActivity.this, getString(R.string.toot_error_no_content), Toasty.LENGTH_SHORT).show();
                     }
-                    statusDrafts.get(statusDrafts.size() - 1).submitted = false;
-                    composeAdapter.notifyItemChanged(statusList.size() - 1);
+                    if (statusDrafts.size() > 0) {
+                        statusDrafts.get(statusDrafts.size() - 1).submitted = false;
+                        composeAdapter.notifyItemChanged(statusList.size() - 1);
+                    }
                 };
                 mainHandler.post(myRunnable);
                 return;
@@ -967,7 +969,7 @@ public class ComposeActivity extends BaseActivity implements ComposeAdapter.Mana
         boolean warnOnly = sharedpreferences.getBoolean(getString(R.string.SET_MANDATORY_ALT_TEXT_WARN), true);
         if (checkAlt) {
             for (Status status : statusDraft.statusDraftList) {
-                if (status.media_attachments != null && status.media_attachments.size() > 0) {
+                if (status != null && status.media_attachments != null && status.media_attachments.size() > 0) {
                     for (Attachment attachment : status.media_attachments) {
                         if (attachment.description == null || attachment.description.trim().isEmpty()) {
                             return warnOnly ? -2 : -1;
diff --git a/app/src/main/java/app/fedilab/android/ui/fragment/FragmentLoginPickInstanceMastodon.java b/app/src/main/java/app/fedilab/android/ui/fragment/FragmentLoginPickInstanceMastodon.java
index 87faac62..8f59d29e 100644
--- a/app/src/main/java/app/fedilab/android/ui/fragment/FragmentLoginPickInstanceMastodon.java
+++ b/app/src/main/java/app/fedilab/android/ui/fragment/FragmentLoginPickInstanceMastodon.java
@@ -90,6 +90,9 @@ public class FragmentLoginPickInstanceMastodon extends Fragment implements Insta
         binding.regCategory.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
             @Override
             public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
+                if (requireActivity().isFinishing() || !isAdded()) {
+                    return;
+                }
                 if (itemA[position].compareTo("custom") != 0) {
                     JoinInstancesVM joinInstancesVM = new ViewModelProvider(requireActivity()).get(JoinInstancesVM.class);
                     joinInstancesVM.getInstances(itemA[position]).observe(requireActivity(), instances -> {
diff --git a/mathjaxandroid/src/main/assets/MathJaxAndroid/mathjax_android.html b/mathjaxandroid/src/main/assets/MathJaxAndroid/mathjax_android.html
index 4369d0e1..b0d685ea 100644
--- a/mathjaxandroid/src/main/assets/MathJaxAndroid/mathjax_android.html
+++ b/mathjaxandroid/src/main/assets/MathJaxAndroid/mathjax_android.html
@@ -69,7 +69,7 @@
 
 </script>
 
-<div style="text-align: center;">
+<div style="text-align: left;">
     <span id='math'></span>
 </div>
 </body>
diff --git a/src/fdroid/fastlane/metadata/android/en/changelogs/485.txt b/src/fdroid/fastlane/metadata/android/en/changelogs/485.txt
index 7a871be1..60b97cab 100644
--- a/src/fdroid/fastlane/metadata/android/en/changelogs/485.txt
+++ b/src/fdroid/fastlane/metadata/android/en/changelogs/485.txt
@@ -2,7 +2,7 @@ Added:
 - Visual indicator when fetching missing messages
 
 Changed:
+- Maths formula aligned to the left
 
 Fixed:
-
 - Some crashes
\ No newline at end of file