[Wd, debug] Setting breakpoint for all elements if one of them already has

1. Enable the debug mode:
   1. "Preferences..."- >"Workflow Designer"->"Runtime settings".
   2. Check "Enable debugger".
   3. Click "OK" to confirm.
2. Open the WD ("Run or Create Workflow" on the "Start Page").
   The "Choose Output Directory" dialog may appear. Set any directory and click "OK".
   Finally the WD window appeared.
3. Open any samples. For example, double-click "Samples"- >"Alignment"->"Align sequences with MUSCLE".
   The "Align Sequences with MUSCLE Wizard" appears.
4. Close the wizard.
   The WD window appears.
5. Set a breakpoint on any element. For example:
   1. Select the "Read alignment" element on the Scene by clicking on it.
   2. Press Ctrl+B (⌘+B) (Break at element).
      The "Read alignment" element has a red frame.
6. Press Ctrl+A (⌘+A) (Select all elements).
   All elements have a dashed frame.
7. Press Ctrl+B (⌘+B) (Break at element).
   Expected state: all elements have the red frame, which means they all have a breakpoint.
   Current state: breakpoints are set only for those elements that didn't have them (in our example, the elements "Align with MUSLCE" and "Write alignment"), and missing for those that did have them ("Read alignment").

When we click "Select all elements", all elements are selected, regardless of whether they were previously selected. It is logical to expect the same from setting breakpoints.
Another motivation: in all software, if part of a word is highlighted in bold, then when you select the entire word and press Ctrl+B (make the text bold), all letters of the word become bold, including those that were bold remain bold.