No editor consumer accesses this object from multiple threads. I'm not sure about places though...
The object is cycle collectable, so it would crash immediately if used in non-main-thread.
(In reply to Ehsan Akhgari [:ehsan] from comment #1)
> No editor consumer accesses this object from multiple threads. I'm not sure
> about places though...
Places only uses the transaction manager from js in the ui thread.
Created attachment 585058 [details] [diff] [review]
Try run for 6355fe761f05 is complete.
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Timed out after 06 hours without completing.