plugins: properties: clear UI viewport at startup

commit 325a028af44593f6a2ad01ea11be93304191393d
Author: Christian Soffke <[email protected]>
Date:   Fri May 8 17:00:15 2026 +0200

    plugins: properties: clear UI viewport at startup
    
    Otherwise, with themes that adjust the viewport
    for the current activity, the background behind
    the progress bar may look glitchy while
    scanning items, until the list is displayed
    
    Change-Id: I27a207b37c3209eae9bc61e1fd0862fb5872be57

diff --git a/apps/plugins/properties.c b/apps/plugins/properties.c
index 4eb727b7bb..fc251e4900 100644
--- a/apps/plugins/properties.c
+++ b/apps/plugins/properties.c
@@ -329,6 +329,15 @@ enum plugin_status plugin_start(const void* parameter)
 {
     static struct dir_stats stats;
     const char *file = parameter;
+    static struct viewport ui_vp;
+
+    /* clear UI vp */
+    struct screen* display = rb->screens[SCREEN_MAIN];
+    rb->viewport_set_defaults(&ui_vp, SCREEN_MAIN);
+    struct viewport *last_vp = display->set_viewport(&ui_vp);
+    display->clear_viewport();
+    display->set_viewport(last_vp);
+
 #ifdef HAVE_TOUCHSCREEN
     rb->touchscreen_set_mode(rb->global_settings->touch_mode);
 #endif
-- 
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