1876926 - No subpixel anti‐aliasing in the message list pane

Status: RESOLVED DUPLICATE of bug 1749921

(Thunderbird :: Folder and Message Lists, defect)

Description

[Daniel Koukola]

For the message list pane, grayscale anti-aliasing is used instead of subpixel anti-aliasing.

The problem can be solved by removing non‐static positioning from some elements, but I'm not sure if this has any side effects:

table[is="tree-view-table"] td {
        position: static !important;
}

tr[is="thread-row"] td > .thread-container {
        position: static !important;
}

/* fix line spacing */
tr[is="thread-row"] .subject-line {
        line-height: normal !important;
}

With WebRender one has to be careful not to lose subpixel anti‐aliasing. Non‐static positioning seems to be a common problem, as it can cause elements to overlap and often a new layer is then used for the elements on top. But since WebRender does not support per‐component alpha channel, subpixel anti‐aliasing cannot be used for this layer.

Comment 2

[Wayne Mery (:wsmwk)]

You are using 115?

Comment 3

[Daniel Koukola]

(In reply to Wayne Mery (:wsmwk) from comment #2)

You are using 115?

Yes, 115.7.0.