* Fix #12469 - crash caused by bridge expansion. Handle a very rare case in which the algorithm picks a wrong polygon for expansion seed. (cherry picked from commit 5f843cc93470c96483abcbd47cf8ee5fe38dffe2) * SPE-2698: Fix crash during regions expansion. (cherry picked from commit a3f75133c8baead6f8d7bb01722a6bfcdc2e9038) --------- Co-authored-by: Martin Šach <martin.sachin@gmail.com> Co-authored-by: Lukáš Hejl <hejl.lukas@gmail.com>