Chrome Version       : 67.0.3378.0
OS Version: 10.0
URLs (if applicable) :
Other browsers tested:
  Add OK or FAIL after other browsers where you have tested this issue:
     Safari:
    Firefox:
    IE/Edge:

What steps will reproduce the problem?
1. go to add bookmark
2. open a folder (with many children)
3. That's all, can too check create new folder

What is the expected result?

The current folder is opened but doesn't move vertically


What happens instead of that?
Depending of the volume of the folder the position can jump up a lot near to a previous sibling or parent without 


Please provide any additional information below. Attach a screenshot if
possible.
It is simple to understand, as it is dynamic I can send an url to download from the cloud a captured video of the screen (too large for upload).
As I have myself developed such management of trees I can tell that this is a common error of calculus of the position of the current pointed folder - before-after tree deployment.
The effect is minor (the current folder jumps) if there are a few children but enormous in some case

UserAgentString: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3378.0 Safari/537.36

_____________________________________________________________
Here is a more general review and wishes about the bookmarks management

Hi,

After the reset of the ancient UI (two or three years ago) for bookmarks we got back all functionalities (lost with the 2014 version) but with some new defaults.
Here I detail these defaults but propose enhancements for both main UI and for manager.

1- The main defaults or UI errors :

a- when you open or close the tree in the bookmark panel the current line is lost and depending of the case after opening a folder the displayed folder changes and sometimes a lot.

Origin : This bug comes from an error in the calculation of the effect of the deployment of the folder.

Consequences : lost time to find back, necessarily manually, the right position (depending of the height of the newly deployed folder this can be a lot difficult (sometimes needs to open the manager and redo the operation)

The target : the current object vertical position must not be moved into the panel on :
- open
- close
The alone valid case is the creation of a new element (see further options and developments wishes) :
- in such case the new position should be the vertical align on the new element

2- Basic wishes for the main panel :
-------------------------------------------------

a ---------------------- 
A search button which allows searching the tree for folders and optionally depending elements (url + name)
The search (I have more than 20,000 bookmarks stored on ten years) options should be :
- entire words or simple string with syntax for "OR" "AND" into the request
- into the name of folder
- into the concatenated name of the inherit names from parent :
       <level 1 name> ==> <level 2 name> ==> <level 3 name> ... <current folder name>
It is this chain (walking down into the tree) which identifies well the element (folder have not, it is right, a unique name and subfolders can be repeated with reason for several parents).

Result waited : a part of the tree (extracted from) which answers to the request to select the targeted folder

b------------------------------- 
Capability to Resize of the panel : to make more easy the changes into the tree.

c-------------------------------- 
When creating a new folder option of the position : last child or first child
d-------------------------------- 
Creation of folder : create a sibling before or after

3- =================================================== 
Basic wishes for bookmark manager"

1- ----------------------------------------------------
 Enhanced search function : based on same syntax that upwards described for the "get bookmark" panel. Ext-ended Google search syntax (Note that for now I export to html, load the html with a css able to create automatic numbering the folders and urls, this allows to identify duplicated folders names and helps a lot in the management of the tree)

2- -----------------------------------
Allow duplicated urls : there is no reason that a bookmark could not belong to several classifications (branches of the tree) used to reach them (my workaround is currently to add a dummy hash ( #0 for example to the url))

3----------------------------------
Maintain both panels search and folder content (then three panel can be opened, easy with moderns screens, the tree, the urls content for the current marked folder of the tree - urls which are leaves of the folders of the tree, and the search result : elements on which we have todo something often for each one or simply several : this need a list that we can keep alive and occasionally mark):
this from right to left or as separable windows (the same as for the development window)
- the tree
- results of the request
- content of the current pointed folder
currently the are a lot of operations needed to clean or update the tree which are crazily boring because when you access a folder into the tree the search results panel disappears.
 Currently it is quite impossible to move one element from one folder to another because you cannot check the urls content of a folder before moving an element from the search result list panel to another folder into the tree.

4- ---------------------------------------
Exportation : export the current marked folder (this with a confirmation : the whole tree or the current marked folder.
This would allow to import only folders from one computer to another or simply save a version.

5- -----------------------------------------
Right click commands : add to right click some the commands of the menu : create new child (and position).
Same options for creation of folders than for front panel

6- ------------------------------------------
Importation : capability to import into a folder an html bookmark exportation as option 4 a simple subfolder.

7- Comment about the bookmarks : add the capability to define comments for folders (explain the content for example) and for url (interest and why here into this folder, use...)

Best regards

Trebly