When switching tabs, the front-end node will be repeatedly initialized, causing loading failure

[LAOGOU-666]

Expected Behavior

Switching tabs should not cause repeated initialization of the front end

Actual Behavior

This is not an isolated case. Many front-end nodes have this problem. A typical example is the painter node, which has a problem of repeated initialization after switching pages. Each switch will accumulate repeated initialization, resulting in failure to update the status normally.

Steps to Reproduce

I tried to modify the node to prevent duplicate initialization, but it didn't work.

Debug Logs