The tree to select folder or file is not visible, unable to select it

Only reproductible with some specific actions:

• I have a project with only one root folder "Medias" (empty)
• Go into folder
• Upload and dezip a file that contains folders
• Go into subfolder
• Select file(s) and try to copy or move them

There is no ">" to expand root folder in dialog box

Note that in folder tree in left column, the chevron to expand /collapse folders also does not appears

It is ok after refreshing the page