diff --git a/src/components/settings/Presets/PresetsForm.vue b/src/components/settings/Presets/PresetsForm.vue
index d13c71eeb8..8db2b5177d 100644
--- a/src/components/settings/Presets/PresetsForm.vue
+++ b/src/components/settings/Presets/PresetsForm.vue
@@ -139,10 +139,8 @@ export default class PresetsForm extends Mixins(BaseMixin) {
     }
 
     existsPresetName(name: string) {
-        return (
-            this.presets.findIndex(
-                (preset: GuiPresetsStatePreset) => preset.name === name && preset.id !== this.preset.id
-            ) !== -1
+        return this.presets.some(
+            (preset: GuiPresetsStatePreset) => preset.name === name && preset.id !== this.preset.id
         )
     }
 
@@ -156,9 +154,9 @@ export default class PresetsForm extends Mixins(BaseMixin) {
 
     savePreset() {
         let setValues = 0
-        for (const key of Object.keys(this.preset.values)) {
+        Object.keys(this.preset.values).forEach((key: string) => {
             if (this.preset.values[key].bool) setValues++
-        }
+        })
         if (this.preset.gcode.length) setValues++
 
         // stop here, when no values are set
@@ -167,15 +165,17 @@ export default class PresetsForm extends Mixins(BaseMixin) {
             return
         }
 
+        const values = structuredClone(this.preset)
+
         // create new preset, if id === null
         if (this.preset.id === null) {
-            this.$store.dispatch('gui/presets/store', { values: this.preset })
+            this.$store.dispatch('gui/presets/store', { values })
             this.closeForm()
             return
         }
 
         // update existing preset
-        this.$store.dispatch('gui/presets/update', { id: this.preset.id, values: this.preset })
+        this.$store.dispatch('gui/presets/update', { id: this.preset.id, values })
         this.closeForm()
     }
 }
diff --git a/src/components/settings/SettingsPresetsTab.vue b/src/components/settings/SettingsPresetsTab.vue
index 536f0359ad..28beb142a7 100644
--- a/src/components/settings/SettingsPresetsTab.vue
+++ b/src/components/settings/SettingsPresetsTab.vue
@@ -62,7 +62,7 @@ export default class SettingsPresetsTab extends Mixins(BaseMixin) {
     }
 
     edit(preset: GuiPresetsStatePreset) {
-        this.formPreset = { ...preset }
+        this.formPreset = structuredClone(preset)
         this.boolForm = true
     }
 }
diff --git a/src/components/webcams/streamers/Hlsstreamer.vue b/src/components/webcams/streamers/Hlsstreamer.vue
index 63b5184222..962293c0d9 100644
--- a/src/components/webcams/streamers/Hlsstreamer.vue
+++ b/src/components/webcams/streamers/Hlsstreamer.vue
@@ -1,18 +1,11 @@
 <template>
     <div class="webcamBackground" :style="wrapperStyle">
-        <video
-            ref="video"
-            v-observe-visibility="visibilityChanged"
-            autoplay
-            muted
-            :style="webcamStyle"
-            class="webcamImage"
-            @loadedmetadata="onLoadedMetadata" />
+        <video ref="video" autoplay muted :style="webcamStyle" class="webcamImage" @loadedmetadata="onLoadedMetadata" />
     </div>
 </template>
 
 <script lang="ts">
-import { Component, Mixins, Prop, Ref } from 'vue-property-decorator'
+import { Component, Mixins, Prop, Ref, Watch } from 'vue-property-decorator'
 import BaseMixin from '@/components/mixins/base'
 import Hls from 'hls.js'
 import { GuiWebcamStateWebcam } from '@/store/gui/webcams/types'
@@ -21,7 +14,6 @@ import WebcamMixin from '@/components/mixins/webcam'
 @Component
 export default class Hlsstreamer extends Mixins(BaseMixin, WebcamMixin) {
     aspectRatio: null | number = null
-    isVisible = true
     hls: Hls | null = null
 
     @Prop({ required: true }) readonly camSettings!: GuiWebcamStateWebcam
@@ -47,10 +39,6 @@ export default class Hlsstreamer extends Mixins(BaseMixin, WebcamMixin) {
         }
     }
 
-    visibilityChanged(isVisible: boolean) {
-        this.isVisible = isVisible
-    }
-
     mounted() {
         this.play()
     }
@@ -59,7 +47,9 @@ export default class Hlsstreamer extends Mixins(BaseMixin, WebcamMixin) {
         this.aspectRatio = this.updateAspectRatioFromVideo(this.video)
     }
 
-    updated() {
+    // restart the stream only when the source actually changes, not on every re-render
+    @Watch('url')
+    onUrlChanged() {
         this.play()
     }
 
@@ -88,8 +78,9 @@ export default class Hlsstreamer extends Mixins(BaseMixin, WebcamMixin) {
         }
     }
 
-    beforeUnmount() {
+    beforeDestroy() {
         this.hls?.destroy()
+        this.hls = null
     }
 }
 </script>
diff --git a/src/components/webcams/streamers/JMuxerStream.vue b/src/components/webcams/streamers/JMuxerStream.vue
index b408935a0a..a66fa814b4 100644
--- a/src/components/webcams/streamers/JMuxerStream.vue
+++ b/src/components/webcams/streamers/JMuxerStream.vue
@@ -20,6 +20,7 @@ import WebcamMixin from '@/components/mixins/webcam'
 @Component
 export default class JMuxerStreamer extends Mixins(BaseMixin, WebcamMixin) {
     jmuxer: JMuxer | null = null
+    ws: WebSocket | null = null
     status: string = 'connecting'
     aspectRatio: number | null = null
 
@@ -52,7 +53,7 @@ export default class JMuxerStreamer extends Mixins(BaseMixin, WebcamMixin) {
 
     play() {
         this.status = 'connecting'
-        this.jmuxer?.destroy()
+        this.stop()
 
         // Only websocket streams supported
         if (!this.url.startsWith('ws://') && !this.url.startsWith('wss://')) {
@@ -80,21 +81,37 @@ export default class JMuxerStreamer extends Mixins(BaseMixin, WebcamMixin) {
         })
 
         const ws = new WebSocket(this.url)
+        this.ws = ws
         ws.binaryType = 'arraybuffer'
+
+        // guard every handler against `ws` having been replaced by a later play(),
+        // so a socket still closing down can never feed the current jmuxer instance
         ws.addEventListener('message', (event) => {
+            if (this.ws !== ws) return
+
             this.jmuxer?.feed({
                 video: new Uint8Array(event.data),
             })
         })
 
         ws.addEventListener('error', (event) => {
+            if (this.ws !== ws) return
+
             this.status = 'error'
             console.log('jmuxer ws error:', event)
         })
     }
 
-    beforeUnmount() {
+    stop() {
+        this.ws?.close()
+        this.ws = null
+
         this.jmuxer?.destroy()
+        this.jmuxer = null
+    }
+
+    beforeDestroy() {
+        this.stop()
     }
 
     @Watch('camSettings', { deep: true })
diff --git a/src/locales/en.json b/src/locales/en.json
index a46e38bcff..538ceb463b 100644
--- a/src/locales/en.json
+++ b/src/locales/en.json
@@ -949,12 +949,6 @@
             },
             "Unknown": "Unknown"
         },
-        "PowerControlPanel": {
-            "Error": "Error",
-            "Off": "Off",
-            "On": "On",
-            "PowerControl": "Power Control"
-        },
         "SpoolmanPanel": {
             "ActiveSpool": "Active Spool",
             "ChangeSpool": "Change Spool",
@@ -1056,8 +1050,6 @@
             "State": "State",
             "Target": "Target",
             "TemperaturesInChart": "Temperature [°C]",
-            "TempTooHigh": "Temperature too high for {name}! (max: {max})",
-            "TempTooLow": "Temperature too low for {name}! (min: {min})",
             "TurnHeaterOff": "Turn Heater Off"
         },
         "ToolheadControlPanel": {
@@ -1600,6 +1592,7 @@
         "Create": "Create",
         "CreateNewDirectory": "create directory",
         "CurrentPath": "Current Path",
+        "Delete": "Delete",
         "DeleteDirectory": "Delete Directory",
         "DeleteDirectoryQuestion": "Do you really want to delete the \"{name}\" directory with all its contents?",
         "DeleteSelectedQuestion": "Do you really want to delete {count} selected files?",