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Heap corruption in dual simplex after postsolve returns a basis with too few basic variables (v1.15.1, deterministic reproducer)

Status: Open.

#3323 In ERGO-Code/HiGHS;

· Flix6x opened on Sep 25, 2026

Active set QP solver reports Non-convex on a convex QP, depending on the order of the columns

Status: Open.

#3322 In ERGO-Code/HiGHS;

· dmeoli opened on Sep 25, 2026

Update the solution file reader to enable what's supplied to be interpreted as a partial solution.

EnhancementNew feature or requestNew feature or request

LP

Status: Open.

#3317 In ERGO-Code/HiGHS;

· jajhall opened on Sep 24, 2026

Performance regression when passing column names

Code-quality

MIP

Status: Open.

#3316 In ERGO-Code/HiGHS;

· jajhall opened on Sep 24, 2026

Suspected: MIP time_limit not checked between presolve and B&B start (s100: 60 s → 258 s)

Code-quality

MIP

Status: Open.

#3314 In ERGO-Code/HiGHS;

· berkorbay opened on Sep 24, 2026

Bugs in liftingForProbing

Bug

MIP

Presolve MIP

Status: Open.

#3307 In ERGO-Code/HiGHS;

· odow opened on Sep 21, 2026

Feature request: pass sub-MIP solutions up to the parent MIP as they are found

EnhancementNew feature or requestNew feature or request

MIP

Status: Open.

#3304 In ERGO-Code/HiGHS;

· spoorendonk opened on Sep 19, 2026

Sometimes hot start of LP problem results in wrong objective value

Code-quality

LP

Status: Open.

#3294 In ERGO-Code/HiGHS;

· WinfriedL opened on Sep 16, 2026

Dual simplex: phase-1 basis history blocks phase-2 progress (self-contained synthetic reproducer)

Code-quality

Simplex

Status: Open.

#3289 In ERGO-Code/HiGHS;

· liujianing055-afk opened on Sep 15, 2026

1 test fails

Bug

Python

Status: Open.

#3265 In ERGO-Code/HiGHS;

· yurivict opened on Sep 11, 2026

Feature requests

EnhancementNew feature or requestNew feature or request

Status: Open.

#3225 In ERGO-Code/HiGHS;

· galabovaa opened on Aug 21, 2026

Enhancements

EnhancementNew feature or requestNew feature or request

Status: Open.

#3205 In ERGO-Code/HiGHS;

· jajhall opened on Aug 6, 2026