Last week I found the root cause of this error. I hope that the 1.5.5 release will fix the inline-issues. Unfortunately, there is no method to restore the inlined primitives.
They were inlined
1. as a result of inconsistent data (caused by a bug), which can't be restored.
2. to obtain the shape of the pattern and to prevent complete data loss of your work
They were inlined
1. as a result of inconsistent data (caused by a bug), which can't be restored.
2. to obtain the shape of the pattern and to prevent complete data loss of your work