https://github.com/eXeC64/imv/issues/305
--- a/src/wl_window.c	2020-12-17 15:30:42.000000000 -0500
+++ b/src/wl_window.c	2021-02-02 19:03:52.598901093 -0500
@@ -545,2 +545,3 @@
     wl_surface_commit(window->wl_surface);
+    wl_display_roundtrip(window->wl_display);
     size_t buffer_width = window->width * window->scale;
@@ -636,4 +637,4 @@
         .height = window->height,
-        .buffer_width = window->width * window->scale,
-        .buffer_height = window->height * window->scale
+        .buffer_width = buffer_width,
+        .buffer_height = buffer_height,
       }