From 16c4c285840331454066aa82f4037bf1a31432d2 Mon Sep 17 00:00:00 2001
From: gullradriel <3157857+gullradriel@users.noreply.github.com>
Date: Wed, 25 Feb 2026 01:28:16 +0100
Subject: [PATCH] fix guru in level / scanner / recon app (#3047)

* fix guru
* fix potential guru
* added information for the sudden return
---
 firmware/application/apps/ui_recon.cpp               | 1 +
 firmware/application/external/level/ui_level.cpp     | 1 +
 firmware/application/external/scanner/ui_scanner.cpp | 1 +
 3 files changed, 3 insertions(+)

diff --git a/firmware/application/apps/ui_recon.cpp b/firmware/application/apps/ui_recon.cpp
index 255b73bb4..e0ba6a97c 100644
--- a/firmware/application/apps/ui_recon.cpp
+++ b/firmware/application/apps/ui_recon.cpp
@@ -1261,6 +1261,7 @@ size_t ReconView::change_mode(freqman_index_t new_mod) {
             else
                 v = SPEC_MODULATION;
             field_mode.set_selected_index(v);
+            return;  // Important ! Guru will occur if you don't return when modifying field from within on_change !
         }
         last_mode = v;
         change_mode(v);
diff --git a/firmware/application/external/level/ui_level.cpp b/firmware/application/external/level/ui_level.cpp
index e8034f31d..d5608b6b3 100644
--- a/firmware/application/external/level/ui_level.cpp
+++ b/firmware/application/external/level/ui_level.cpp
@@ -137,6 +137,7 @@ LevelView::LevelView(NavigationView& nav)
             else
                 v = SPEC_MODULATION;
             field_mode.set_selected_index(v);
+            return;  // Important ! Guru will occur if you don't return when modifying field from within on_change !
         }
         last_mode = v;
         change_mode(v);
diff --git a/firmware/application/external/scanner/ui_scanner.cpp b/firmware/application/external/scanner/ui_scanner.cpp
index 8d87b6c39..cc116eefe 100644
--- a/firmware/application/external/scanner/ui_scanner.cpp
+++ b/firmware/application/external/scanner/ui_scanner.cpp
@@ -461,6 +461,7 @@ ScannerView::ScannerView(
             else
                 v = WFM_MODULATION;
             field_mode.set_selected_index(v);
+            return;  // Important ! Guru will occur if you don't return when modifying field from within on_change !
         }
         last_mode = v;
         receiver_model.disable();