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Fix subtitle does not properly clear/remove from the chart #7571

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Fix subtitle does not properly clear/remove from the chart #7571

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fix(layout-subtitle): fix `layout.title.subtitle` does not properly c…
cminn10 Oct 5, 2025
2ddb7fa
Add draftlog for #7571
cminn10 Oct 5, 2025
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1 change: 1 addition & 0 deletions draftlogs/7571_fix.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
- Fix `layout.title.subtitle` does not properly clear/remove from the chart when `subtitle` object is not in place, or `subtitle.text` set to `null`, empty string, or whitespace-only values. [[#7571](https://github.com/plotly/plotly.js/pull/7571)]
8 changes: 4 additions & 4 deletions src/components/titles/index.js
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Expand Up @@ -81,7 +81,7 @@ function draw(gd, titleClass, options) {
var subtitleEnabled = !!subtitleProp;
var subtitlePlaceholder = options.subtitlePlaceholder;
var subtitle = (cont.title || {}).subtitle || {text: '', font: {}};
var subtitleTxt = subtitle.text.trim();
var subtitleTxt = (subtitle.text || '').trim();
var subtitleIsPlaceholder = false;
var subtitleOpacity = 1;

Expand Down Expand Up @@ -160,7 +160,7 @@ function draw(gd, titleClass, options) {
var subtitleClass = titleClass + '-subtitle';
var subtitleElShouldExist = subtitleTxt || editable;

if(subtitleEnabled && subtitleElShouldExist) {
if(subtitleEnabled) {
subtitleEl = group.selectAll('text.' + subtitleClass)
.data(subtitleElShouldExist ? [0] : []);
subtitleEl.enter().append('text');
Expand Down Expand Up @@ -231,7 +231,7 @@ function draw(gd, titleClass, options) {
.attr(attributes)
.call(svgTextUtils.convertToTspans, gd, adjustSubtitlePosition);

if(subtitleEl) {
if(subtitleEl && !subtitleEl.empty()) {
// Set subtitle y position based on bottom of title
// We need to check the Mathjax group as well, in case the Mathjax
// has already rendered
Expand Down Expand Up @@ -405,7 +405,7 @@ function draw(gd, titleClass, options) {
}

el.classed('js-placeholder', titleIsPlaceholder);
if(subtitleEl) subtitleEl.classed('js-placeholder', subtitleIsPlaceholder);
if(subtitleEl && !subtitleEl.empty()) subtitleEl.classed('js-placeholder', subtitleIsPlaceholder);

return group;
}
Expand Down