When creating new rows in Sales Orders and Sales Quotations with 30+ lines, the system exhibits unexpected behavior:

1. If a row is added in the middle of the existing set of rows, the newly created empty row "jumps". As a result, the user must wait a few seconds for the empty row to return to its intended position before filling it in.
2. If a row is added at the end of the existing set, a second "ghost" empty row briefly appears for a few seconds before disappearing, after which the user can enter data into the new row.

Since the target audience for Dynamics 365 Finance/Supply Chain Management consists of large or very large companies, where Sales Orders and Sales Quotations with fewer than 30 rows are more the exception than the rule, the current design limitations significantly slow down users' work with Sales Orders and Sales Quotations and leading to additional data entry errors. It also forces users to manually split large orders into smaller ones to reduce the frequency of these "jumping" issues.

According to most users, a system like Dynamics 365 Finance/Supply Chain Management should be capable of handling large Sales Orders and Sales Quotations (300+ rows) without "jumps".