I am not sure if this is part of Thunar. I am using SMPlayer with is using the native file dialogs. Playing files over a (slower) network. The dialog is starting in phases: 1: Open screen with all fields empty 2: Dialog is updating the bread-crumb menu with the folder, the "Location" field still empty 3: The "Location" field is unlocked and the user can enter stuff 4: The screen is updated. The "Location" field is updated with current playing item and the file is also "selected" in the file pane. Usually my clipboard contains the complete path to a file. I open the dialog. I paste (ctlr-v) the path and press enter. Now there is some timing issue. In some cases the location is overwritten by info about the current file (by step 4) So, i like to propose a little change. If the location is modified by the user then do not update the "Location" field.
It would help alot if you could tell what you do to get the dialog, or provide a screenshot of the dialog. I guess it appears if you select "File -> Open" ? Since SMPlayer is a QT application, I guess QTFileDialog is used for that.
Created attachment 9870 Open Dialog
Thats a GtkFileChooser dialog: https://developer.gnome.org/gtk2/stable/GtkFileChooserDialog.html That is a bit surprising for me, since afaik SMPlayer is a qt application.. In any case, that dialog is not part of Thunar, so I will close the bug. You can report bugs with that dialog here: https://gitlab.gnome.org/GNOME/gtk (Best first search if such a bug already exists)
Thanks, created a bug report (https://gitlab.gnome.org/GNOME/gtk/-/issues/2757) I do no like the native dialog. That one is annoying. It is small and resets the size after opening. I can not paste a new filepath in the field until it is completed loading the filelist.