Matches hold state when navigating back to same letter

src/seedsigner/views/seed_tools_view.py

@@ -425,8 +425,10 @@ class SeedToolsView(View):
                 # to freely float to a different letter; only update the active
                 # keyboard keys when a selection has been locked in (KEY_PRESS) or
                 # removed ("del").
-                self.letters = self.letters[:-1]
-                if ret_val in self.possible_alphabet:
+                # If you're returning to the same letter (e.g. "v" to inactive, back
+                # to "v", don't recalc and re-render).
+                if ret_val in self.possible_alphabet and ret_val != self.letters[-1]:
+                    self.letters = self.letters[:-1]
                     self.letters.append(ret_val)
                     self.calc_possible_words()  # live update our matches as we move
 
@@ -434,7 +436,8 @@ class SeedToolsView(View):
                     render_possible_matches()
                 else:
                     # Do nothing when hovering over an inactive letter
-                    self.letters.append(" ")
+                    # self.letters.append(" ")
+                    pass
 
             # Render the text entry display and cursor block
             render_text_entry_display()