The attached IDML is a standalone, two-page reproduction made from scratch. In desktop InDesign, selecting the test text frame on page 1 and choosing Type > Fill with Placeholder Text hangs the application. Page 2 completes the same operation after reducing only the body paragraph leading by 0.01 pt.

The document uses only Arial Regular/Bold and Times New Roman Regular. It contains no customer content, linked assets, embedded scripts, REP markup, or third-party document features. No REP server or scripting setup is needed to follow the manual steps below.

TESTED ENVIRONMENT

• Windows 11.
• Adobe InDesign 2026, application version 21.5.1.73

ATTACHMENTS

• Baseline-grid-placeholder-hang.idml: editable reproduction, two pages.

MANUAL STEPS TO REPRODUCE

Save other work before running the failing case: it can require force-quitting InDesign. Run the control first.

Control – page 2

1. Open Baseline-grid-placeholder-hang.idml in desktop InDesign.
2. Navigate to page 2, labelled “B - Leading 0.01 pt below baseline grid”.
3. Press Esc if necessary, then V to activate the Selection tool.
4. Click the border of the two-column text frame containing paragraphs A, B, C, and D. Do not select either instructions frame.
5. Choose Type > Fill with Placeholder Text.
6. Observe that the operation returns promptly and adds placeholder text.
7. Close the document without saving, then reopen the original IDML to run the failing case from its initial state.

Failing case – page 1 8. Navigate to page 1, labelled “A - Leading equals baseline grid”. 9. With the Selection tool, select the border of its A/B/C/D text frame. 10. Choose Type > Fill with Placeholder Text. 11. Observe that InDesign stops responding. In the verified desktop test, the command did not return and the process remained busy/unresponsive for over 30 seconds; the disposable test process was then force-closed.

EXPECTED RESULT

Placeholder text should be generated and the command should return promptly on both pages. Baseline alignment, column spanning, or equal numeric values for leading and grid spacing should not cause the application to hang.

ACTUAL RESULT

Page 1 hangs in the native Fill with Placeholder Text operation. Page 2 completes the same menu command. Both pages open, compose, and export normally before running the command; opening the IDML alone does not reproduce the hang.

WORKAROUND

In this document, reduce the body paragraph style’s leading from 10 pt to 9.99 pt. Keep the baseline grid at 10 pt and leave baseline alignment and column spanning enabled. Page 2 demonstrates that workaround.