Keyboard control lost and the Next move becomes sticky after the Variation pop-up window appears on screen

[nicktmro]

Summary: when navigating through a game it is possible to lose keyboard control and the Next Move game navigation button becomes sticky.

Environment:
SCID Version 5.0.0, Jan 27 2023 running on macOS Ventura, Using Tcl/Tk version: 8.6.13
Tcl(8.6.13), TclOO(1.1.0), Tk(8.6.13), Ttk(8.6.13), ezsmtp(1.0.0), msgcat(1.6.1), opt(0.4.8), tcl::tommath(8.6.13), tooltip(1.4.6), ttk::theme::alt(8.6), ttk::theme::aqua(8.6), ttk::theme::clam(8.6), ttk::theme::classic(8.6), ttk::theme::default(8.6), zlib(2.0.1).

Steps to reproduce:

1. Open a game from a database and start going through the moves using the right arrow (to got forward) and back arrow (to go back)
2. After a few moves, introduce a variation by making a few moves the were not made in the game. Make these moves using the mouse
3. Navigate back to the variation forking point and observe that a new window appears on screen
4. Press arrow right to select the first option. The Variations pop-up window disappears

Expected results:

• I can continue to navigate through the game using the keyboard arrows
• I can go back using the keyboard arrows to select another variation

Actual results:

• As soon as I press arrow right in Step 4 above, I lose control of the game and pressing the back and forward arrows on my keyboard doesn't navigate through the game
• Clicking the Next Move button (sorry, don't know what to call the forward, single arrow chevron just below the game board) makes the game just quickly flick through from one move to the next and the button remains sticky as per the screenshot below
  

[nicktmro]

Attaching the PGN of the game in the screenshot in case it helps. (Renamed to txt in order to be able to upload it here)
scid_issue_109.pgn.txt