I am on an iMac i9 (2020) Radeon Pro 5700 XT 16GB, 64GB of RAM, 2TB SSD, and MacOS Sequoia 15.7.1 running Premiere Pro 25.5.0.
On this project I am working on, I am in the Text Panel under the Transcript tab and making corrects. Often the corrections fail to show, so when I edit the text, and press "Tab" on my keyboard (or click away off the panel), the edits I made disappear and it shows how the text looked originally. To fix this, I have to close and re-open the project, which is very annoying, and then it works like as expected.
Usually before this happens I have been editing the sequence (removing small moments and such) and thus could be related to that. Seems to work fine if editing the text is the first thing I do once I reload the project.