Passage Editor: Cursor scrolls out of window, just from typing characters - could this be related to Harlowe (e.g. syntax highlighting)?

While typing, for each charakter, or e.g. backspace, the text in the editor scrolls one line up (sometimes down). This continues, until the cursor has left the visible window. Then it continuously alternates scrolling one line up (out of sight), one line down (top visible line) for the rest of typing at that position.

For a longer description of the bug, see https://github.com/klembot/twinejs/issues/1338 The Twine authors don't seem to know this phenomenon which seems strange to me, because it happens to me regularly.

Could someone check, if this bug is maybe caused by the interaction of Twine and Harlowe, both doing things in the passage editor? (Which I consider, because Twine does search and replace, story format does syntax highlighting, tool tips etc.)

Twine 2.5.1, Harlowe 3.3.3, desktop version.