Shared Nodes Possible Bug + Feature request

Hi,
just toying around with shared nodes in Resolve 15 studio full release on windows 10.
If I create a shared node and copy it to another clip and unlock the shared node, the software often crashes or it does unlock but still does not except changes.
Sometime it does work, so I do not see a consistent behavior.
If it does work, and I do a copy of the timeline, the shared nodes are no longer shared nodes. This is unfortunately a consistent behavior (a bug?).
This brings me also to a feature request. It would be cool, if a shared node would be persistent within different timelines. So when I do a change in Timeline 1 to a shared node, that change would be applied to the copy of the same shared node from Timeline 2.
The reason is, imagine grading a 30 second clip, when done the clients wants a 20 second cut down. Then he changes his mind about some grades from the 30 seconds version, would it not be cool if those changes would be applied automatically to the 20 second version (with the same clips and shared nodes.).
Thanks
just toying around with shared nodes in Resolve 15 studio full release on windows 10.
If I create a shared node and copy it to another clip and unlock the shared node, the software often crashes or it does unlock but still does not except changes.
Sometime it does work, so I do not see a consistent behavior.
If it does work, and I do a copy of the timeline, the shared nodes are no longer shared nodes. This is unfortunately a consistent behavior (a bug?).
This brings me also to a feature request. It would be cool, if a shared node would be persistent within different timelines. So when I do a change in Timeline 1 to a shared node, that change would be applied to the copy of the same shared node from Timeline 2.
The reason is, imagine grading a 30 second clip, when done the clients wants a 20 second cut down. Then he changes his mind about some grades from the 30 seconds version, would it not be cool if those changes would be applied automatically to the 20 second version (with the same clips and shared nodes.).
Thanks