When using cuda_code_tree_x plugin，it is found that sometimes the bookmark is not in the correct level.
Like below，the bookmark test1 and test2 is level4 after sec 1.1.1，it is right. But the test3 and test4 is level 2 which should be level 5 after sec1.1.1.1. Similarly，test5 level is right but test6 level is incorrect.
When using cuda_code_tree_x plugin，it is found that sometimes the bookmark is not in the correct level. Like below，the bookmark test1 and test2 is level4 after sec 1.1.1，it is right. But the test3 and test4 is level 2 which should be level 5 after sec1.1.1.1. Similarly，test5 level is right but test6 level is incorrect.
tst-plg-bug.md
From forum, https://synwrite.sourceforge.net/forums/viewtopic.php?t=3125