Barline weirdness in engrave mode during "faked" time signatures

I’m working on a new edition of Helena Munktell’s Suite dalécarlienne and she made liberal use of multiple simultaneous time signatures in order to avoid writing gobs and gobs of tuplets. While I could have just written the tuplets out because this is a computer and not handwritten manuscript, I chose to be faithful to the original and I’m now paying the price a bit for that decision. I’ve worked through some oddities with multirests, but I’ve hit upon a really strange behavior in engrave mode when trying to get parts formatted and paginated nicely.

Specifically, if I have “faked” a time signature using the typical procedure of making a local time signature with pickups and then making a hidden tuplet in that measure to ensure the right number of notes display, I run into problems where Dorico all but demands to break measures in the middle. See the following example, bar 44:

I can work around this by adding a bunch of system breaks in, and I’ve done this in other parts, but in this part, doing that creates some very sparse systems that look terrible because there’s not enough music in them. See the following, about the only way I could get the barlines to actually land on the ends of systems, but it’s really sparse as a result:

Any ideas here?

If you don’t want bars to break in the middle, uncheck this layout option…

Unfortunately, that box is already unchecked as part of my library file.

In which case Dorico should never break a bar across systems (unless you have a single very long bar on a system, which you clearly don’t have here). Did you check the settings for the relevant layout (layout options are layout-specific)?

To diagnose further, can you upload your project? (someone will likely give you a solution/explanation in a few minutes)

Yep…makes no sense.

I’ve attached a file for this particular flow. The whole file is too large to be uploaded to the forum (and, well, I’m not in the habit of giving away this much work for free).

Suite Dalécarlienne - Finale. Sommarnatt… fortare går dansen.dorico (2.3 MB)

Sorry. I can’t open the file (apparently it is private or non-existent)

(If you want to PM me, I’ll take a look)

Suite Dalécarlienne - Finale. Sommarnatt… fortare går dansen.dorico (2.3 MB)

I did DM Janus, but trying the upload again in case someone else is following the thread.

I’ve PM’d a reply.