Error on refresh when a tree is open

[brumik]

How to reproduce:

Open Service -> Catalog -> Catalog items. Create a new catalog item general. Open the entry point which opens up a tree. Then while the tree is open try to refresh the page.

**Now you have an error message: **

To get rid of it you need to restart memchache and restart the development server.

@skateman
@miq-bot add_label bug

[skateman]

The problem here is that the right-side tree interferes with the left-side tree and upon reload the system gets confused about the correct value of x_active_tree and x_node. The only viable solution I see is to move as much logic as possible to the frontend and so decouple the right-side tree from this session-backed nightmare.

[chessbyte]

Should be resolved when #6819 is completed

[miq-bot]

This issue has been automatically marked as stale because it has not been updated for at least 3 months.

If you can still reproduce this issue on the current release or on master, please reply with all of the information you have about it in order to keep the issue open.

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