It appears that importing the defaultStyle causes the style specific asset folder to be created, leading to issues with the style migration.
<instruction type="userNotificationEvent" />
<instruction type="userOption" />
- <instruction type="style" run="standalone">defaultStyle.tar</instruction>
-
<instruction type="language" />
<instruction type="script" run="standalone">acp/update_com.woltlab.wcf_5.3_invalidateMailForm.php</instruction>
<instruction type="script" run="standalone">acp/update_com.woltlab.wcf_5.3_style.php</instruction>
+ <instruction type="style" run="standalone">defaultStyle.tar</instruction>
+
<!-- This SQL step purges the legacy package servers, this must come last to make sure that an early
abort of the core upgrade does not brick the installation. -->
<instruction type="sql">update_5.3.sql</instruction>