Issue:
I asked for a font file conversion app using the opentype.js library. The initial tests returned invalid files, so I requested a fix, which triggered a deep_debug session. It correctly identified that it needed to use .toArrayBuffer() instead of .toBuffer().buffer. At this point, the conversion worked perfectly.

Problem:
However, when I asked for a fix to an unrelated cosmetic issue in the UI, a new deep_debug session was triggered. While the cosmetic issue was fixed, it also ran a static analysis that incorrectly flagged .toArrayBuffer() as invalid, and reverted the code to use the old method (.toBuffer().buffer) instead.

Even though I interrupted the session as soon as I noticed the change, it was too late—the app was broken again.

I then gave the instruction: "The conversion was working fine before I asked to remove the sidebar, please check the changes since then." The tool correctly found the commit and reverted the change, and the conversion worked perfectly again.

However, when I attempted to apply additional cosmetic changes, the same sequence occurred: new deep_debug session, static analysis, and reversion to .toBuffer().buffer.

At that point, the conversion was working again, but I had already exhausted my credits, as the deep_debug tool seems to consume them very quickly.

I plan to try recreating the app later to see if I can reproduce the issue.