Fix popover doesn't show if its content or title is set dynamically after init

js/src/tooltip.js

@@ -186,14 +186,14 @@ class Tooltip extends BaseComponent {
       throw new Error('Please use show on visible elements')
     }
 
-    if (!(this._isWithContent() && this._isEnabled)) {
+    if (!((this._isWithContent() || this._newContent != null) && this._isEnabled)) {
       return
     }
 
     const showEvent = EventHandler.trigger(this._element, this.constructor.eventName(EVENT_SHOW))
     const shadowRoot = findShadowRoot(this._element)
     const isInTheDom = (shadowRoot || this._element.ownerDocument.documentElement).contains(this._element)
-
+    
     if (showEvent.defaultPrevented || !isInTheDom) {
       return
     }

js/tests/unit/popover.spec.js

@@ -56,6 +56,26 @@ describe('Popover', () => {
   })
 
   describe('show', () => {
+    fit('should show a popover with no content after setContent', () => {
+      return new Promise(resolve => {
+        fixtureEl.innerHTML = '<a href="#">BS twitter</a>'
+
+        const popoverEl = fixtureEl.querySelector('a')
+        const popover = Popover.getOrCreateInstance(popoverEl)
+
+        popoverEl.addEventListener('shown.bs.popover', () => {
+          expect(document.querySelector('.popover')).not.toBeNull()
+          resolve()
+        })
+
+        popover.setContent({
+          '.popover-body': 'some content'
+        })
+
+        popover.show()
+      })
+    })
+
     it('should toggle a popover after show', () => {
       return new Promise(resolve => {
         fixtureEl.innerHTML = '<a href="#" title="Popover" data-bs-content="https://twitter.com/getbootstrap">BS twitter</a>'