titlebar background not fully applied when setting marks

[apewo]

When setting marks in swayfx, the background is not fully apply in the titlebar.
Here are 2 partial screenshots to better see the issue :

https://i.postimg.cc/Sx2yGBHk/screenshot-20250721-05-56-17.png
https://i.postimg.cc/Dz1n9q2N/screenshot-20250721-05-56-11.png

one fix i found is to not update the clippping are in the mark block if there is a title text.
Im not skill enough in the swayfx internals to know if this is the correct fix, but it works and i didnt saw any glitches in any container mode, tabbed, stacked, split, floating ...

here is the patch im using :

diff --git a/sway/tree/container.c b/sway/tree/container.c
index ec713400..435b6d98 100644
--- a/sway/tree/container.c
+++ b/sway/tree/container.c
@@ -354,10 +354,13 @@ void container_arrange_title_bar(struct sway_container *con) {
                wlr_scene_node_set_position(node->node,
                        h_padding, (height - node->height) >> 1);

-               text_box.x = node->node->x;
-               text_box.y = node->node->y;
-               text_box.width = alloc_width;
-               text_box.height = node->height;
+
+               if (!con->title_bar.title_text) {
+                       text_box.x = node->node->x;
+                       text_box.y = node->node->y;
+                       text_box.width = alloc_width;
+                       text_box.height = node->height;
+               }
        }

        if (con->title_bar.title_text) {

sway version : swayfx version 0.5.3-514a51c1 (Jul 21 2025, branch 'master') (based on sway 1.11.00)

[WillPower3309]

Interestingly this is only with one char marks

[WillPower3309]

Looks like marks also have an implication wrt transparency of the title text: