Liferay Popup displays " " in modal-title if no title is defined

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.1.X, 7.2.X, 7.3.X, Master
• Fix Version/s: 7.0.0 DXP FP102, 7.0.10.16 DXP SP17, 7.0.X, 7.1.10 DXP FP21, 7.1.X, 7.2.10 DXP FP11, 7.2.10.4 DXP SP4, 7.2.X, 7.3.10 DXP FP1, 7.3.10.1 DXP SP1, 7.3.6 CE GA7, 7.3.X, 7.4.13 DXP GA1, Master
• Component/s: JS APIs and Utilities > Frontend JS Web API
• Labels:
  • ee-ts
  • liferay-dxp-70-sp17
  • liferay-dxp-72-sp4
  • liferay-dxp-73-sp1
  • liferay-fixpack-de-102-7010
  • liferay-fixpack-dxp-1-7310
  • liferay-fixpack-dxp-11-7210
  • liferay-fixpack-dxp-21-7110
• Branch Version/s:
  7.3.x, 7.2.x, 7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 3
• Git Pull Request: https://github.com/liferay-frontend/liferay-portal/pull/702

Reproduction steps:
1) Start a master bundle
2) Open up the browser's console with F12 (no need to login into Liferay)
3) Paste this snippet and hit enter:

Liferay.Util.openWindow({
    dialog: {
        modal: true,
        width: 500,
        centered: true,
        draggable: false,
        resizable: false,
        cssClass: 'classRed',
        bodyContent: 'Test dialog box'
    },
    id: 'confirmationDialogId'
});

4) A pop-up will open. Observe the top part where the title usually appears:

Expected:
No title to appear

Actual behavior:

" "

will be displayed as a title