* [#11363](http://bugzilla.scilab.org/show_bug.cgi?id=11363): show_window() did not raise the current graphics window.
* [#12520](http://bugzilla.scilab.org/show_bug.cgi?id=12520): Vriable browser did not display the size of the variables.
* [#12534](http://bugzilla.scilab.org/show_bug.cgi?id=12534): Variable browser did not display the size of the variables.
+<<<<<<< HEAD
* [#13766](http://bugzilla.scilab.org/show_bug.cgi?id=13766): Minimal values for `.figure_size` were not documented.
* [#14498](http://bugzilla.scilab.org/show_bug.cgi?id=14498): `size([],3)` returned 1 instead of 0.
* [#14501](http://bugzilla.scilab.org/show_bug.cgi?id=14501): `strsubst` crashed on consecutive occurrences.
* [#14557](http://bugzilla.scilab.org/show_bug.cgi?id=14557): `csim` failed when the system has no state.
* [#14498](http://bugzilla.scilab.org/show_bug.cgi?id=14498): `size([],3)` returned 1 instead of 0.
* [#14604](http://bugzilla.scilab.org/show_bug.cgi?id=14604): `emptystr` is 40x slower with 6.0.0 wrt 5.5.2
+=======
+* [#14015](http://bugzilla.scilab.org/show_bug.cgi?id=14015): Nan terms added to a polynomial were ignored.
+* [#14604](http://bugzilla.scilab.org/show_bug.cgi?id=14604): `emptystr()` is 40x slower with 6.0.0 wrt 5.5.2
+>>>>>>> 18f023abe88... * Bugs 14015 15068 fixed: Non-regression tests added
* [#14605](http://bugzilla.scilab.org/show_bug.cgi?id=14605): fixed - `bench_run` was too strict about the specification of tests names.
* [#14606](http://bugzilla.scilab.org/show_bug.cgi?id=14606): Memory used by variables returned by `[names,mem]=who()` was always zero.
* [#14610](http://bugzilla.scilab.org/show_bug.cgi?id=14610): `x = ric_desc(H,E)` always yielded an error. [x1,x2,residual] = ric_desc(..) returned a wrong `residual` value.
* [#14863](http://bugzilla.scilab.org/show_bug.cgi?id=14863): In Xcos, the default ending time was unhandily high (100000), reduced it to 30.
* [#14982](http://bugzilla.scilab.org/show_bug.cgi?id=14982): `msprintf` segmentation fault was caught due to wrong size
* [#14985](http://bugzilla.scilab.org/show_bug.cgi?id=14985): scilab crashed if a .bin file was not found.
+* [#15068](http://bugzilla.scilab.org/show_bug.cgi?id=15068): `size(sum(ones(2,3,4,5),4))` was [4 2 3] instead of [2 3 4].
* [#15087](http://bugzilla.scilab.org/show_bug.cgi?id=15087): Deleting rows or columns from a matrix is slow (regression)
* [#15248](http://bugzilla.scilab.org/show_bug.cgi?id=15248): `lsq`was leaking memory.
* [#15269](http://bugzilla.scilab.org/show_bug.cgi?id=15269): `xgetech` was poor and stiff compared to any combination of `gca()` properties `.axes_bounds`, `.data_bounds`, `.log_flags`, and `.margins`. It is removed.
--- /dev/null
+// =============================================================================
+// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+// Copyright (C) 2019 - Samuel GOUGEON
+//
+// This file is distributed under the same license as the Scilab package.
+// =============================================================================
+//
+// <-- CLI SHELL MODE -->
+// <-- NO CHECK REF -->
+//
+// <-- Non-regression test for bug 15068 -->
+//
+// <-- Bugzilla URL -->
+// http://bugzilla.scilab.org/15068
+//
+// <-- Short Description -->
+// size(sum(ones(2,3,4,5) ,4)) was [4 2 3] instead of [2 3 4]
+
+s = sum(ones(2,3,4,5), 4);
+assert_checkequal(size(s), [2 3 4]);
+assert_checkequal(s, ones(2,3,4)*5);
--- /dev/null
+// =============================================================================
+// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+// Copyright (C) 2019 - Samuel GOUGEON
+//
+// This file is distributed under the same license as the Scilab package.
+// =============================================================================
+//
+// <-- CLI SHELL MODE -->
+// <-- NO CHECK REF -->
+//
+// <-- Non-regression test for bug 14015 -->
+//
+// <-- Bugzilla URL -->
+// http://bugzilla.scilab.org/14015
+//
+// <-- Short Description -->
+// Nany Nan term added to a polynomial was ignored
+
+assert_checkequal(coeff(%nan+%z), [%nan 1]);
+assert_checkequal(coeff(1+%nan*%z), [%nan %nan]);
+assert_checkequal(coeff(%nan+%nan*%z), [%nan %nan]);
+assert_checkequal(coeff(%nan+0*%z), %nan);
+assert_checkequal(coeff(%nan*%s^2 + %s^4), [%nan %nan %nan 0 1]);