Fixed the issues #3280

firmware/application/ui/ui_spectrum.hpp

@@ -72,6 +72,8 @@ class AudioSpectrumView : public View {
 
 class FrequencyScale : public Widget {
    public:
+    /* Receives a frequency offset in Hz for key/touch selection. With live
+     * tuning enabled, encoder events instead pass the raw encoder delta. */
     std::function<void(int32_t offset)> on_select{};
 
     void on_show() override;

firmware/baseband/filtered_spectrum_collector.cpp

@@ -51,6 +51,12 @@ bool FilteredSpectrumCollector::feed(
         sampling_rate_ = channel.sampling_rate / capture_decimation_;
         capture_ready_ = true;
         EventDispatcher::events_flag(EVT_MASK_SPECTRUM);
+        if (is_streaming()) {
+            capture_ready_ = true;
+            EventDispatcher::events_flag(EVT_MASK_SPECTRUM);
+         } else {
+            capture_ready_ = false;
+         }
         return true;
     }
     return false;

firmware/baseband/spectrum_collector.hpp

@@ -51,6 +51,7 @@ class SpectrumCollector {
         const int32_t filter_transition);
 
    protected:
+    bool is_streaming() const { return streaming; }
     void set_filter(
         const int32_t filter_low_frequency,
         const int32_t filter_high_frequency,