diff --git a/apps/file_manager/ui.cpp b/apps/file_manager/ui.cpp
index 2022d08..bda44b3 100644
--- a/apps/file_manager/ui.cpp
+++ b/apps/file_manager/ui.cpp
@@ -528,8 +528,20 @@ void ListItemGenerateThumbnailTask(Instance *, Task *task) {
 		return; // There are no longer any list items visible for this file.
 	}
 
+	EsFileInformation information = EsFileOpen(STRING(task->string), ES_FILE_READ | ES_NODE_FAIL_IF_NOT_FOUND);
+
+	if (ES_SUCCESS != information.error) {
+		return; // The file could not be loaded.
+	}
+
+	if (information.size > 64 * 1024 * 1024) {
+		EsHandleClose(information.handle);
+		return; // The file is too large.
+	}
+
 	size_t fileBytes;
-	void *file = EsFileReadAll(STRING(task->string), &fileBytes);
+	void *file = EsFileReadAllFromHandle(information.handle, &fileBytes);
+	EsHandleClose(information.handle);
 
 	if (!file) {
 		return; // The file could not be loaded.
diff --git a/desktop/gui.cpp b/desktop/gui.cpp
index d6fc3a7..fccc656 100644
--- a/desktop/gui.cpp
+++ b/desktop/gui.cpp
@@ -3742,7 +3742,7 @@ EsButton *EsButtonCreate(EsElement *parent, uint64_t flags, const EsStyle *style
 		style = UIGetDefaultStyleVariant(style, parent);
 	}
 
-	if (style == ES_STYLE_PUSH_BUTTON_NORMAL) {
+	if (style == ES_STYLE_PUSH_BUTTON_NORMAL || style == ES_STYLE_PUSH_BUTTON_DANGEROUS) {
 		flags |= ES_BUTTON_PUSH;
 	} else if (style == ES_STYLE_PUSH_BUTTON_TOOLBAR || style == ES_STYLE_PUSH_BUTTON_TOOLBAR_MEDIUM 
 			|| style == ES_STYLE_PUSH_BUTTON_TOOLBAR_BIG || style == ES_STYLE_PUSH_BUTTON_STATUS_BAR) {
diff --git a/kernel/windows.cpp b/kernel/windows.cpp
index 91db296..35bc112 100644
--- a/kernel/windows.cpp
+++ b/kernel/windows.cpp
@@ -3,6 +3,11 @@
 // TODO Don't send key released messages if the focused window has changed.
 // TODO Blur clamping is incorrect with minimal repainting!
 
+// Terminology:
+// 	Dynamic resize - flicker-free resizing in container windows with an embedded window owned by a separate process.
+// 	Direct update - paint first onto the video card's framebuffer, then onto the window manager's; used to reduce latency.
+// 	Fast scroll - scrolling by shifting the bits in the window's surface, rather than repainting the entire area.
+
 struct EmbeddedWindow {
 	void Destroy();
 	void Close();