Typewriter effect fails on mixed uppercase/lowercase text and renders first two words at once

Bug Report

When using the Typewriter effect from Film Impact inside Adobe Premiere Pro, the effect does not behave correctly on text containing a mix of uppercase and lowercase letters.

Expected behavior

The text should appear one character at a time in sequence, regardless of whether the text uses uppercase letters, lowercase letters, or a combination of both.

Actual behavior

When the text is written in all uppercase, the effect works correctly and reveals the letters one by one as expected.

However, when the text contains a mix of uppercase and lowercase letters, the animation breaks. The first part of the text appears all at once instead of being typed character by character. In my case, the first two words or sentences are shown instantly.

The behavior also seems to vary depending on the font used. Some very basic fonts do not work correctly, while some more complex fonts unexpectedly do work. However, based on my testing, the issue clearly appears to be related to mixed capitalization rather than font complexity itself.

Suspected cause

It seems very likely that the issue is related to how the effect handles mixed uppercase and lowercase characters. Font rendering may play a minor role, but the main issue appears to be the use of lowercase letters in combination with uppercase letters.

Impact

This bug makes the Typewriter effect nearly unusable in practical editing scenarios, since mixed uppercase and lowercase text is common in normal titles and on-screen text.

Steps to reproduce

1. Open Adobe Premiere Pro.

2. Add a text layer or title to the timeline.

3. Apply the Film Impact Typewriter effect.

4. Enter text using only uppercase letters and preview the animation.

5. Replace the text with a version that uses both uppercase and lowercase letters.

6. Preview the animation again.

7. Notice that the mixed-case version does not animate letter by letter correctly and instead shows part of the text at once.

8. Repeat with different fonts to observe the behavior.

Additional notes

• I am using a Mac Studio 2023 with Apple M2 Max, 64 GB memory, running macOS Tahoe 26.3.1.

• I am using the latest updated version of Adobe Premiere Pro, version 26.0.2 (Build 2).

• The fonts that do work correctly are all capital-only fonts.

• Tested fonts include:

  • Fira Sans: does not work

  • Arial: does not work

  • Montserrat: does not work

  • Relaxe: works, but this is a capitals-only font

  • Bebas Neue: works, but this is a capitals-only font

• I will not continue testing more fonts, because from my side it is already clear that the issue is related to lowercase versus uppercase usage.

• With the fonts listed above that fail in mixed case, the effect works perfectly as soon as I type the text in all uppercase.