Saved score opens with a different layout
I've been experiencing changes in the layout of symbols such as hairpins and dynamic marks when saving a file and then opening it again.
The problem occurs when some of the elements are set as "automatic placement" and others not. Sometimes this is necessary since the full automatic placement is not satisfactory. One example of this is when there are some potential collisions (for instance, when there are two ore three ledger lines), which are correctly dealt with by the automatic placement algorithm, but the default rendering is not aligned with other similar symbols in the same staff. While this is not a mandatory precept, it is recommended (for example, by Elaine Gould).
The mix of automatic and non-automatic placement is a tradeoff, since automatic placement solves local alignment between dynamic marks and hairpins.
However, even if it looks well at saving, when opening again everything is messed up.
As a workaround, all symbols must be placed manually.